Lista completa de distribuciones Linux

Listado completo de distribuciones Linux

(Última actualización: Julio 2011)


1. 2X ThinClientOS
2X ThinClientOS is a Debian-based GNU/Linux distribution with a small footprint, optimised for remote desktop computing. It features auto-detection capabilities similar to Knoppix. It boots directly to a login manager which, when coupled with the ThinClientServer, redirects users to a remote RDP/ICA/NX desktop. The distribution can be booted via PXE, CD or installed to a hard disk or flash disk. Updates to the distribution are managed through the ThinClientServer web interface. 2X ThinClientOS requires 2X ThinClientServer to boot up; ThinClientServer is a commercial product, though it is free for up to five thin clients.

2. Absolute Linux
Absolute Linux is a light-weight modification of Slackware Linux. It includes several utilities that make configuration and maintenance easier and it has many common desktop and Internet applications installed and configured with tight integration of menus, applications and MIME types. Absolute Linux uses IceWM and ROX for its window and file managers.

3. AbulÉdu
AbulÉdu is a French Linux distribution, specifically designed for data processing in educational establishments. Originally based on Mandrake Linux, the most recent releases are based on Debian GNU/Linux and KNOPPIX.

4. AgiliaLinux
AgiliaLinux is a Russian community distribution with roots in Slackware Linux. It features a custom text-mode system installer with installation classes, an advanced package manager called mpkg, and support for several popular desktop environments.

5. Alinex
Alinex, developed by the Universidade de Évora, is a Ubuntu-based Portuguese Linux distribution designed for the students of the university. It includes an easy installation program, complete localisation into Portuguese, and all the necessary software the university students might need to develop new applications.

6. aLinux
aLinux (formerly Peanut Linux) is an independently developed Linux distribution with RPM package management.

7. Alpine Linux
Alpine Linux is a community developed operating system designed for x86 routers, firewalls, VPNs, VoIP boxes and servers. It was designed with security in mind; it has proactive security features like PaX and SSP that prevent security holes in the software to be exploited. The C library used is uClibc and the base tools are all in BusyBox. Those are normally found in embedded systems and are smaller than the tools found in GNU/Linux systems.

8. ALT Linux
ALT Linux was founded in 2001 by a merge of two large Russian free software projects. By the year 2008 it became a large organization developing and deploying free software, writing documentation and technical literature, supporting users, and developing custom products. ALT Linux produces different types of distributions for various purposes. There are desktop distributions for home and office computers and for corporate servers, universal distributions that include a wide variety of development tools and documentation, certified products, distributions specialized for educational institutions, and distributions for low-powered computers. ALT Linux has its own development infrastructure and repository called Sisyphus, which provides the base for all the different editions of ALT Linux.

9. AnNyung Linux
AnNyung is an i686-optimised, server-oriented Korean Linux distribution based on the Red Hat/Fedora technology and with added security features.

10. antiX
antiX is a fast, lightweight and easy-to-install linux live CD distribution based on MEPIS and Debian's testing branch for Intel/AMD x86-compatible systems. antiX offers users the "Magic of MEPIS" in an environment suitable for old computers. The goal of antiX is to provide a light, but fully functional and flexible free operating system for both newcomers and experienced users of Linux. It should run on most computers, ranging from 64 MB PII systems with a pre-configured 128 MB swap partition to the latest powerful boxes. 128 MB RAM is the recommended minimum for antiX while the installer needs a minimum of 2.2 GB hard disk space. antiX can also be used as a fast-booting rescue CD.

APODIO is a Linux live and installation DVD with a large collection of open source audio and video software, as well as graphical utilities for making system administration as simple and intuitive as possible. It is based on Ubuntu.

12. aptosid
The aptosid distribution is a desktop-oriented operating system and live CD based on the unstable branch of Debian GNU/Linux. Besides full compatibility with its parent, the distribution also offers a custom kernel with support for a wide variety of modern hardware devices, KDE as the default desktop environment, a rolling release cycle, and compliance with Debian's Free Software guidelines.

13. Arch Linux
Arch Linux is an independently developed, i686- and x86_64-optimised Linux distribution targeted at competent Linux users. It uses 'pacman', its home-grown package manager, to provide updates to the latest software applications with full dependency tracking. Operating on a rolling release system, Arch can be installed from a CD image or via an FTP server. The default install provides a solid base that enables users to create a custom installation. In addition, the Arch Build System (ABS) provides a way to easily build new packages, modify the configuration of stock packages, and share these packages with other users via the Arch Linux user repository.

14. ArchBang Linux
ArchBang Linux is a lightweight distribution based on Arch Linux. Using the Openbox window manager, it is fast, up-to-date and suitable for both desktop and portable systems.

15. ArcheOS
ArcheOS stands for Archaeological Operating System. It is a GNU/Linux live DVD distribution (versions 1.x based on PCLinuxOS, versions 2 and 3 on Kubuntu, version 4 on Debian GNU/Linux), with specialist software for archaeological purposes.

16. AriOS
AriOS is a user-friendly, Ubuntu-based distribution containing extra applications, multimedia codecs, Flash and Java plugins, many tweaks and a unique look and feel.

17. Ark Linux
Ark Linux is a Linux distribution designed especially for desktop use, primarily for people without prior Linux experience. Its main goal is ease of use, and the inclusion of many tools end users will need. Ark Linux is fully Open Source and Free Software, meaning, basically, you can freely redistribute it in both modified and unmodified form.

18. ARMA aka Omoikane GNU/Linux
Omoikane GNU/Linux, known as OGL, is a Japanese distribution based on Debian's testing branch. It has a user friendly installer based on Scheme and GTK+. The commercial branch of the Omoikane GNU/Linux is knows as ARMA - it includes the most popular Japanese input method "ATOK", RICHO True Type Fonts and other features. A free version of OGL, containing fewer packages, is available from FTP servers and mirrors.

19. ArtistX
ArtistX is a Ubuntu-based bootable DVD containing many free multimedia software packages for audio, 2D and 3D graphics, and video production. The goal of this project is to showcase the variety of multimedia software available on the GNU/Linux platform and to enable creative individuals to accomplish their tasks with the help of Free Software.

20. Asianux
Asianux is a Linux server operating system which is co-developed by Chinese Leading Linux vendor Red Flag Software Co., Ltd. and Japanese Linux vendor Miracle Linux Cooperation, aiming at the common-standard enterprise Linux platform for Enterprise systems in Asia. It provides enterprise customers with high reliability, scalability, manageability and better hardware and software compatibility. Asianux certification partner program will invite more hardware and software products to be certified on Asianux, and it will definitely help to reduce developing and certificating resources and provide Linux with high quality and low cost. Red Flag Software and Miracle will distribute and market Asianux without any modifications in each Linux distribution package in China and Japan. New products will be based on Asianux and each will be bundled with localised features in each country.

21. Astaro Security Gateway
Astaro offers an integrated software solution that provides superior performance in an all-in-one firewall. Its hardened operating system, stateful packet inspection, content filtering (virus & surf protection), application proxies and IPsec based VPN provides a powerful solution to today's security issues. It is designed to maximize your networks security without compromising its performance enabling telecommuters, branch offices, customers and suppliers to safely share critical business information. Our proprietary user interface, WebAdmin allows ease of use and manageability of all open source firewall components, as well as the Up2Date service via the Internet. It is easy to install with all components on one CD achieving simple implementation and integration to existing network environments.

22. AsteriskNOW
AsteriskNOW is a software appliance, a customized Linux distribution that includes Asterisk, the AsteriskGUI, and all other software needed for an Asterisk system. The world's leading open source telephony engine and toolkit, Asterisk can now be easily configured with a graphical interface. AsteriskNOW includes all the Linux components necessary to run, debug and build Asterisk. Since version 1.5, AsteriskNOW is based on CentOS (earlier versions were based on rPath Linux).

23. Asturix
Asturix is a desktop-oriented Linux distribution based on Kubuntu. Some of its features include easy-to-use design, integration of social and micro-blogging networks, integration of popular web-based applications, and ability to legally download and play music via's free download service.

24. Aurora OS
Aurora OS started its life as Eeebuntu, an Ubuntu-based distribution optimised for ASUS Eee PC and other popular netbooks. In June 2010 the project was renamed to Aurora OS, with a goal to become a more general Linux distribution for the desktop with user-friendly features.

AUSTRUMI (Austrum Latvijas Linukss) is a bootable live Linux distribution based on Slackware Linux. It requires limited system resources and can run on any Intel-compatible system with a CD-ROM installed. The entire operating system and all of the applications run from RAM, making AUSTRUMI a fast system and allowing the boot medium to be removed after the operating system starts.

26. AV Linux
AV Linux is a versatile, Debian-based distribution featuring a large collection of audio and video production software. Additionally, it also ships with a fine-tuned Liquorix kernel with many performance and tuning enhancements to maximise operating efficiency. AV Linux can be run directly from a live DVD or a live USB storage device, though it can also be installed on a hard disk and used as a general-purpose operating system for everyday tasks.

27. BackTrack
BackTrack is an Ubuntu-based distribution with a collection of security and forensics tools. It was created by merging Auditor Security Linux with WHAX (formerly Whoppix).

28. Baltix GNU/Linux
Baltix GNU/Linux is an Ubuntu-based distribution designed primarily for Lithuanian and Latvian speakers, as well as other users from Europe's Baltic region. Besides standard software found in an Ubuntu release, Baltix also includes a variety of educational programs, games, vector graphic and diagram drawing software, WINE integration for running Windows applications, office clipart, and internationalisation features for the supported languages.

29. Bardinux
Bardinux, a project of the Office of Free Software at the Universidad de La Laguna, Canary Islands, Spain, is a Kubuntu-based distribution. It follows Kubuntu's long-term support release and is designed primarily for the students of the university.

30. Bayanihan Linux
Bayanihan Linux is a complete open source-based desktop solution for office and school use. It is a package that includes an operating system, a word processor, spreadsheet program, presentation software, email facility, an internet browser, and a graphics editor. This complete system is packaged in a single easy-to-install CD. The word "Bayanihan" relates to a Filipino tradition where people in a community help their neighbour in physically moving their house to a different place. The most recent versions of Bayanihan Linux are based on Debian GNU/Linux; previous releases (3.1 and earlier) were based on Fedora Core and Red Hat Linux.

31. Berry Linux
Berry Linux is a bootable CD Linux with automatic hardware detection and support for many graphics cards, sound cards, SCSI and USB devices and other peripherals. Berry Linux can be used as a Linux demo, educational CD or as a rescue system. It is not necessary to install anything on a hard disk, although this option is also available (it needs 1.2GB of hard disk space). Berry Linux is based on Red Hat Linux and Knoppix.

32. Big Linux
Big Linux is a Brazilian Linux live CD with support for hard disk install and localised into Brazilian Portuguese. It is based on Kubuntu.

33. blackPanther OS
blackPanther OS is a Hungarian Linux distribution which borrows features from other major projects, including Mandriva Linux (graphical configuration tools), Fedora (graphical user interface) and Ubuntu (driver management). The distribution is designed for use at school, home and work as it contains applications for common daily tasks, such as time management, office work or media playback.

34. BLAG Linux And GNU
BLAG is a Linux distribution based on Fedora and reduced to one CD. It includes useful applications missing from Fedora, as well as a suite of graphics, Internet, audio, video, office, and peer-to-peer file sharing applications. BLAG is up-to-date with all Fedora errata fixes at time of release and uses Synaptic for easy upgrades. The name stands for Brixton Linux Action Group, which works to overthrow corporate control of information and technology through community action and to spread Free Software.

35. BlankOn
BlankOn is an Ubuntu-based distribution developed by the Indonesian Linux Mover Foundation and BlankOn developer team. It is an Indonesian distribution that includes a variety of software that is widely used by consumers in general, such as office programs, financial applications, Internet applications, drawing (both vector and bitmap), support for various multimedia file formats, as well as other interesting programs.

36. Bodhi Linux
Bodhi Linux is an Ubuntu-based distribution for the desktop featuring the elegant and lightweight Enlightenment window manager. The project, which integrates and pre-configures the very latest builds of Enlightenment directly from the project's development repository, offers modularity, high level of customisation, and choice of themes. The default Bodhi system is light -- the only pre-installed applications are Midori, LXTerminal, PCManFM, Leafpad and Synaptic -- but more software is available via Bodhi Software Center, a web-based software installation tool.

37. BOSS GNU/Linux
BOSS (Bharat Operating System Solutions) GNU/Linux is a Debian-based Linux distribution developed by C-DAC for enhancing the use of free and open source software in India. Made specifically for the Indian environment, it consists of a pleasing desktop environment coupled with Indian language support and other packages that are most relevant for use in the government domain.

38. BRLix
BRLix GNU/Linux (formerly Famelix GNU/Linux) is a distribution based on Debian GNU/Linux. Its peculiarity lies in the adaptation of the user interface so that it resembles Windows Vista (or optionally Windows XP) as much as possible.

39. Burapha Linux
Burapha Linux Server is a free Linux distribution. It is a descendant of Burapha Linux 5.5, which in turn was a descendant of Slackware 10.x. Burapha Linux Server does not have any packages taken directly from Slackware; the project builds their own packages and have their own package manager. The primary purpose of development is for the computer science students to learn the infrastructure of a UNIX system, and to apply the acquired knowledge in research and projects.

40. CAELinux
CAELinux is a live DVD Linux distribution dedicated to computer-aided engineering (CAD) and finite element analysis. Based on Ubuntu, it features a full software solution for professional 3D FE analysis from CAD geometry. It includes the Salome 3D pre/post processor, Code_Aster non-linear/multi- physics FE solver, Code-Saturne and OpenFOAM CFD solvers, Elmer multiphysics suite, GMSH, Netgen and enGrid 3D meshers, GNU Octave, Rkward, wxMaxima, Scilab, and more.

CAINE (Computer Aided INvestigative Environment) is an Ubuntu-based GNU/Linux live distribution created as a project of digital forensics. It offers a complete forensic environment that is organised to integrate existing software tools as software modules and to provide a friendly graphical interface. The main design objectives that CAINE aims to guarantee are: an interoperable environment that supports the digital investigator during the four phases of the digital investigation, a user-friendly graphical interface, and a semi-automated compilation of the final report.

42. Calculate Linux
Calculate Linux is a Gentoo-based family of three distinguished distributions. Calculate Directory Server (CDS) is a solution that supports Windows and Linux clients via LDAP + SAMBA, providing proxy, mail and Jabbers servers with streamlined user management. Calculate Linux Desktop (CLD) is a workstation and client distribution with KDE, GNOME or Xfce desktop that includes a wizard to configure a connection to Calculate Directory Server. Calculate Linux Scratch (CLS) is live CD with a build framework for creating a custom distribution.

43. Canaima GNU/Linux
Canaima GNU/Linux is a Venezuelan desktop distribution based on Debian GNU/Linux. It is primarily designed as a solution for the computers of National Public Administration in accordance with the presidential decree number 3.390 about the use of free technologies in National Public Administration in the country.

44. Caos Linux
Caos Linux NSA is a light-weight, fast, efficient, stable, and secure distribution of Linux that is appropriate for servers, compute nodes, network appliances, and even the latest desktop and laptop computers. It is maintained and managed by a team of computer science experts with numerous proven skills. With resources pooled together, they created a multifunctional operating system with mission critical dependability. Caos Linux is designed to run on all x86_64 and i386 hardware ranging from clusters and servers to production level appliances to personal desktops and laptops. Supporting a wide variety of software, Caos Linux is based on the best aspects of GNU/Linux and has full binary compatibility with the most popular enterprise distribution of Linux.

45. CCux Linux
CCux Linux is a free i686 distribution optimised for speed. All packages are built from scratch and not derived from any other distribution. It features a graphical QT/X11 based installation to provide an easy installation procedure even to unexperienced users. CCux Linux is especially designed for desktop use.

46. CDlinux
CDlinux is a compact Linux mini-distribution. It ships with an up-to-date version of the Linux kernel, X.Org, Xfce window manager, and many popular applications. It has good internationalisation and locale support, and is highly user-configurable.

47. CensorNet
CensorNet is an Internet Management Appliance designed to control and monitor individuals accessing Internet resources on a local area network. This dedicated server inspects all inbound and outbound data and decides, based on configurable rules, whether the individual or workstation concerned has the correct access profile to allow the request to be completed.

48. CentOS
CentOS as a group is a community of open source contributors and users. Typical CentOS users are organisations and individuals that do not need strong commercial support in order to achieve successful operation. CentOS is 100% compatible rebuild of the Red Hat Enterprise Linux, in full compliance with Red Hat's redistribution requirements. CentOS is for people who need an enterprise class operating system stability without the cost of certification and support.

49. Chakra GNU/Linux
Chakra GNU/Linux is a user-friendly and powerful distribution and live CD originally forked from Arch Linux. It features a graphical installer, automatic hardware detection and configuration, the latest KDE desktop, and a variety of tools and extras.

50. ClearOS
ClearOS Enterprise is a server, network, and gateway platform designed for small businesses and distributed enterprise environments. ClearOS Enterprise is based upon ClearOS Core which is a rebuild of Red Hat Enterprise Linux. The distribution is flexible and includes an extensive list of features and integrated services which can be configured through a web-based interface. Some of the tools found in ClearOS Enterprise include anti-virus, anti-spam, VPN, content filtering, bandwidth manager, file services, SMTP services, print services, SSL certification, and web services. ClearOS includes a marketplace which simplifies the installation of software including 3rd party modules. The distribution is provided as a free download, inclusive of basic OS updates with free registration.

51. Clonezilla Live
Clonezilla Live is a Debian-based live CD containing Clonezilla, a partition and disk cloning software similar to Norton Ghost. It saves and restores only used blocks in hard drive. With Clonezilla, one can clone a 5 GB system to 40 clients in about 10 minutes.

52. Comfusion
Linux Comfusion (previously known as Uberyl) is a desktop Linux distribution that combines an Ubuntu base system with the latest 3D desktop technologies on a live DVD.

53. ConnochaetOS
ConnochaetOS (formerly DeLi Linux) is an Arch-based Linux distribution for old computers, from i486 to Pentium MMX 166. It's focused on desktop usage. It includes email clients, a graphical web browser, an office package with word processor and spreadsheet. A full install, including X window system and development tools, needs no more than 300 MB of hard disk space.

54. Coyote Linux
Coyote Linux Personal Firewall is a personal firewall distribution of Linux designed for the purpose of protecting a personal or educational network. In addition to being designed to have very low hardware requirements, Coyote Linux is able to provide the performance and uptime that is expected from any Linux based system. This firewall product is licensed for personal and educational use and is available free of charge.

55. CrunchBang Linux
CrunchBang Linux is an Debian-based distribution featuring the light-weight Openbox window manager and GTK+ applications. The distribution has been built from a minimal Debian system and customised to offer a good balance of speed and functionality. CrunchBang Linux is currently available as a live CD; however, the best performance is achieved by installing it to a hard disk.

56. CRUX
CRUX is a lightweight, i686-optimised Linux distribution targeted at experienced Linux users. The primary focus of this distribution is "keep it simple", which is reflected in a simple tar.gz-based package system, BSD-style initscripts, and a relatively small collection of trimmed packages. The secondary focus is utilization of new Linux features and recent tools and libraries.

57. CTKArch
CTKArch is a minimalist, Arch-based live CD using the Openbox window manager. It includes a text-based system installer, support for a number of popular file systems, and out-of-the-box support for English and French languages.

58. Càtix
Càtix is a Linux live DVD based on Debian GNU/Linux, offering support for the the Catalan language.

59. Damn Vulnerable Linux
Damn Vulnerable Linux (DVL) is a Slackware and Slax-based live DVD. The distribution, purposefully stuffed with broken, ill-configured, outdated and exploitable software, began life as a training system used during the author's university lectures. Its primary goal is to design a Linux system that is as vulnerable as possible -- in order to teach and demonstrate a variety of security topics, including reverse code engineering, buffer overflows, shell code development, web exploitation, and SQL injection.

60. Debian GNU/Linux
The Debian Project is an association of individuals who have made common cause to create a free operating system. This operating system is called Debian GNU/Linux, or simply Debian for short. Debian systems currently use the Linux kernel. Linux is a completely free piece of software started by Linus Torvalds and supported by thousands of programmers worldwide. Of course, the thing that people want is application software: programs to help them get what they want to do done, from editing documents to running a business to playing games to writing more software. Debian comes with over 20,000 packages (precompiled software that is bundled up in a nice format for easy installation on your machine) - all of it free. It's a bit like a tower. At the base is the kernel. On top of that are all the basic tools. Next is all the software that you run on the computer. At the top of the tower is Debian -- carefully organizing and fitting everything so it all works together.

61. Debris Linux
Debris Linux is a minimalist, desktop-oriented distribution and live CD based on Ubuntu. It includes the GNOME desktop and a small set of popular desktop applications, such as GNOME Office, Firefox web browser, Pidgin instant messenger, and ufw firewall manager. Debris Linux ships with a custom kernel, a custom system installer called DebI, and a script that makes it easy to save and restore any customisations made while in live mode.

62. DebXPde

63. DEFT Linux
DEFT (Digital Evidence & Forensic Toolkit) is a customised distribution of the Ubuntu live Linux CD. It is an easy-to-use system that includes excellent hardware detection and some of the best open-source applications dedicated to incident response and computer forensics.

64. DesktopBSD
DesktopBSD is an operating system based on FreeBSD and the FreeSBIE live CD. Its main goal is to provide a desktop operating system that is easy to use, but still has all the functionality and power of BSD. In the long term, DesktopBSD wants to build an operating system that meets most requirements desktop users have, like installing software, configuring power management or sharing an internet connection.

65. Devil-Linux
Devil-Linux is a CD-based Linux distribution for firewalls and routers. The goal of Devil-Linux is to have a small, customizable and secure (what is secure on the Internet?) Linux. The future of Devil-Linux will go far beyond an ordinary router, we will provide a lot of other services, but the distribution will still be easy and fast to maintain.

66. DigAnTel
DigAnTel is a free digital / analog VoIP telephone system based on CentOS and using Asterisk, FreePBX with VoicePulse module, Openfire, vtigerCRM, Postfix, OpenVPN, and automated Polycom Phone support. DigAnTel is the glue to bind these technologies, thus creating a unified telephony system for a home or small business. The installation is completely automated and doesn't require a working knowledge of Linux or Asterisk.

67. DoudouLinux
DoudouLinux is a Debian-based distribution targeting young children. Its goals are to make computer use as simple and pleasant as possible while also making information technology more accessible to all children on earth, without discrimination. DoudouLinux uses a heavily customised LXDE desktop with a simple navigation system that offers links to about fifty applications for education, fun, work and multimedia tasks.

68. Draco GNU/Linux
Draco GNU/Linux is a distribution based on Slackware Linux and pkgsrc, a package management system developed by NetBSD. It is distributed in the form of a minimal base system, but a range of additional software packages is available for installation from the project's FTP server.

69. DragonFly BSD
DragonFly is an operating system and environment designed to be the logical continuation of the FreeBSD-4.x OS series. These operating systems belong in the same class as Linux in that they are based on UNIX ideals and APIs. DragonFly is a fork in the path, so to speak, giving the BSD base an opportunity to grow in an entirely new direction from the one taken in the FreeBSD-5 series.

70. Dragora GNU/Linux
Dragora GNU/Linux is a distribution created from scratch with the intention of providing a stable, multi-platform and multi-purpose operating system. It is built upon 100% free software. It has a very simple packaging system that allows installing, removing, upgrading and creating packages. Dragora can be an ideal distribution for those who wish to learn how a distribution works on the inside.

71. Dreamlinux
Dreamlinux is a Brazilian distribution based on Debian GNU/Linux. A live CD with a graphical hard disk installation option, it boots directly into an Xfce or GNOME desktops which provide access to a good collection of desktop applications and a central control panel for system configuration.

72. EasyPeasy
EasyPeasy (formerly Ubuntu Eee) is an Ubuntu-based distribution for netbooks. It uses Ubuntu Netbook Remix graphical user interface and includes open source as well as proprietary software.

73. Edubuntu
Edubuntu is a partner project of Ubuntu Linux, a distribution suitable for classroom use. The aim is that an educator with limited technical knowledge and skill will be able to set up a computer lab, or establish an on-line learning environment, in an hour or less, and then administer that environment without having to become a fully-fledged Linux geek.

74. Ekaaty Linux
Ekaaty Linux is a Brazilian community distribution based on Fedora Core. Its single-CD releases are geared towards desktop use in business and home environments, with KDE desktop, Smart package manager, office suite, Kontact personal information management suite, and antivirus/antispam tools forming the backbone of the distribution. Ekaaty Linux supports English and Portuguese languages only.

75. Elastix
Elastix is a Linux distribution that integrates the best tools available for Asterisk-based Private Branch Exchanges (PBX) into a single, easy-to-use interface. It also adds its own set of utilities and allows for the creation of third-party modules to make it an excellent software package available for open source telephony. Based on CentOS.

76. elementary OS
elementary OS is an Ubuntu-based desktop distribution. Some of its more interesting features include a new GTK+ and icon theme for GNOME, the Midori web browser, new applications developed in-house (e.g. Dexter, an address book and Postler, an email client), and Nautilus Elementary, a simple file manager.

77. Elive
Elive, or Enlightenment live CD, is a Debian-based desktop Linux distribution and live CD featuring the Enlightenment window manager. Besides being pre-configured and ready for daily desktop use, it also includes "Elpanel" - a control centre for easy system and desktop administration. Elive is a commercial distribution; while the live CD is available as a free download, those wishing to install it to a hard disk are asked to pay US$15 for an installation module.

78. Endian Firewall
Endian Firewall is a Unified Threat Management (UTM) Appliance that protects networks and improves connectivity. Based on Red Hat Enterprise Linux, Endian Firewall is 100% open source and includes a wide variety of features, such as stateful inspection firewall, HTTP/FTP anti-virus, content filter, POP3/SMTP anti-virus, anti-phishing and anti-spam tools, true SSL/TLS VPN, IDS, and other features.

79. EnGarde Secure Linux
EnGarde Secure Linux is a server-oriented open source operating system that provides services like web, DNS and email simply and securely while eliminating the need for time-consuming "hardening" by the user. EnGarde offers integrated intrusion detection, advanced kernel and network security features, and graphical auditing and reporting - all controlled through Guardian Digital WebTool, a simplified browser-based management system.

80. Epidemic GNU/Linux
Epidemic GNU/Linux is a Brazilian desktop Linux distribution based on Debian GNU/Linux. Its main features are the KDE desktop, easy-to-use installer, 3D desktop features with CompizFusion, use of the GFXBoot bootloader, out-of-the-box support for numerous proprietary and non-free kernel drivers, and support for a variety of media codecs.

81. Estrella Roja
Estrella Roja (formerly Red Star GNU/Linux) is a Debian-based distribution and live CD for the desktop. Developed in Argentina, it is primarily designed for Spanish-speaking users.

82. ESUN Linux
ESUN Linux is an Ubuntu-based distribution containing free software for enterprise management. Developed at the University of Tarapaca in Chile, the project's goal is to deliver a new alternative to students, teachers and the community at large. The distribution includes software for enterprise resource planning (ERP), customer relationship management (CRM), project management, accounting, electronic commerce, human resources, office and database.

83. Evinux
Evinux is a Linux live CD based on Knoppix, but with light-weight window managers - Fluxbox and XFce. It is developed by, a French organisation for promoting Free Software and GNU/Linux.

84. ExTIX
ExTIX is a desktop Linux distribution based on Debian GNU/Linux.

85. Fedora
The Fedora Project is an openly-developed project designed by Red Hat, open for general participation, led by a meritocracy, following a set of project objectives. The goal of The Fedora Project is to work with the Linux community to build a complete, general purpose operating system exclusively from open source software. Development will be done in a public forum. The project will produce time-based releases of Fedora about 2-3 times a year, with a public release schedule. The Red Hat engineering team will continue to participate in building Fedora and will invite and encourage more outside participation than in past releases. By using this more open process, we hope to provide an operating system more in line with the ideals of free software and more appealing to the open source community.

86. Fermi Linux
Fermi Linux LTS (Long Term Support) is a site distribution based on Scientific Linux, which is in essence Red Hat Enterprise Linux, recompiled. It is Scientific Linux with Fermilab's security hardening and customised configurations to allow an administrator to install Fermi Linux and have the machine meet Fermilab's security requirements with little or no extra configuration. Since Fermi Linux LTS is based on Scientific Linux, it shares it's goal that if a program runs and is certified on Red Hat Enterprise Linux, then it will run on the corresponding Fermi Linux LTS release.

87. Finnix
Finnix is a small, self-contained, bootable Linux CD distribution for system administrators, based on Debian GNU/Linux. You can use it to mount and manipulate hard drives and partitions, monitor networks, rebuild boot records, install other operating systems, and much more.

88. Foresight Linux
Foresight Linux is a desktop operating system, based on rPath Linux, featuring an intuitive user interface and showcasing the latest desktop software. As a Linux distribution, Foresight sets itself apart by eliminating the need for the user to be familiar with Linux, combining a user-focused desktop environment on top of the Conary package management system. As the most technically innovative software management system available today, Conary ensures that users can efficiently search, install, and manage all the software on the Foresight system, including bringing in the latest features and fixes without waiting for a major release.

89. FreeBSD
FreeBSD is a UN*X-like operating system for the i386, IA-64, PC-98, Alpha/AXP, and UltraSPARC platforms based on U.C. Berkeley's "4.4BSD-Lite" release, with some "4.4BSD-Lite2" enhancements. It is also based indirectly on William Jolitz's port of U.C. Berkeley's "Net/2" to the i386, known as "386BSD", though very little of the 386BSD code remains. FreeBSD is used by companies, Internet Service Providers, researchers, computer professionals, students and home users all over the world in their work, education and recreation.

90. FreeNAS
FreeNAS is a tiny FreeBSD-based operating system which provides free Network-Attached Storage (NAS) services (CIFS, FTP and NFS).

91. Frenzy
Frenzy is a portable system administrator toolkit, a live CD based on FreeBSD. It generally contains software for hardware tests, file system check, security check and network setup and analysis.

92. Frugalware Linux
Frugalware Linux is an independently developed general purpose desktop Linux distribution designed for intermediate users. It follows simple Slackware-like design concepts and includes the "pacman" package management utility from Arch Linux.

93. Fuduntu
Fuduntu is a Fedora-based Linux distribution that earns its name by its ambition to fit somewhere in-between Fedora and Ubuntu. It is designed to be aesthetically pleasing, and is optimized for netbook and other portable computers, as well as general-purpose desktop machines.

94. FuguIta
FuguIta is an OpenBSD live CD featuring portable workplace, low hardware requirements, additional software, and partial support for Japanese. This live CD is intended to be as close as possible to the default OpenBSD when installed on a hard disk.

95. Funtoo Linux
Funtoo Linux is a Gentoo-based distribution developed by Daniel Robbins (the founder and former project leader of Gentoo Linux) and a core team of developers, built around a basic vision of improving the core technologies in Gentoo Linux. Funtoo Linux features native UTF-8 support enabled by default, a git-based, distributed Portage tree and Funtoo overlay, an enhanced Portage with more compact mini-manifest tree, automated imports of new Gentoo changes every 12 hours, GPT/GUID boot support and streamlined boot configuration, enhanced network configuration, up-to-date stable and current Funtoo stages - all built using Funtoo's Metro build tool.

96. Fusion Linux
Fusion Linux is a Fedora remix that adds all the best software that is available for Linux (free, non-free and even some non-open source firmware and applications for better user experience). It is an installable live DVD image that includes multimedia functionality out of the box, with added desktop tweaks for better usability, and additional software. Fusion Linux is 100% compatible with Fedora, including packages from Fedora and RPM Fusion software repositories.

97. GALPon MiniNo
GALPon MiniNo is a lightweight, Debian-based distribution designed for PCs that are 10 years old (or more), though it's also perfectly usable on modern computers and netbooks. It contains a carefully tuned selection of applications that try to maintain a balance between features, ease of use and speed. IceWM with ROX-Filer and PCManFM provides the desktop. The distribution has full support for three languages (English, Galician and Spanish) and it also comes with "magic icons" - a set of tools that automate repetitive or system tasks (e.g. rotate or resize hundreds of digital images, convert audio or video files into other formats or burn an audio CD with a simple drag & drop).

98. GeeXboX
GeeXboX is a full operating system, running under Linux and based on the excellent MPlayer. No need of hard drive, you just have to put the GeeXboX bootable CD into the CD-Drive of any pentium-class computer to boot it. Moreover, GeeXboX is a free software, created thanks to many open-source software. This means that everyone can modify it and build his own release of the GeeXboX. You may wonder why you could have to boot on another operating system to play your media files, but just think about the Mini-ITX plateforms like VIA Epia/Eden or Shuttle barebones. It's now affordable to bring DivX to your home cinema, plugging this kind of computers directly to your TV. At the time of the first development release (December 2002), it was only able to play DivX movies, but for now, nearly every kind of media files can be played from GeeXboX.

99. Gentoo Linux
Gentoo Linux is a versatile and fast, completely free Linux distribution geared towards developers and network professionals. Unlike other distros, Gentoo Linux has an advanced package management system called Portage. Portage is a true ports system in the tradition of BSD ports, but is Python-based and sports a number of advanced features including dependencies, fine-grained package management, "fake" (OpenBSD-style) installs, safe unmerging, system profiles, virtual packages, config file management, and more.

100. Gentoox
Gentoox is an adaptation of the popular Linux distribution called Gentoo. It is compiled from Stage 1 with full optimisations to run on a Microsoft Xbox games console. Software or hardware mods are required.

101. GhostBSD
GhostBSD it is a user-friendly, GNOME-based FreeBSD distribution in the form of an installable live CD. Besides developing the live CD, the project's other goal is to improve the GNOME desktop experience on a FreeBSD system.

102. Gibraltar Firewall
Gibraltar is a Debian-based firewall package which is bootable directly from a CD-ROM, so hard disk installation is not necessary. The configuration data is optionally stored on a hard disk, floppy disk or USB storage device. Gibraltar was specifically developed for small to medium-size enterprises and fulfils all demands for an up-to-date firewall package. In times where the threats of viruses, worms, trojan horses or hackers are increasing rapidly, Gibraltar offers an extensive protection of internet connections. Besides a commercial release of Gibraltar a free edition is also available.

103. GnackTrack
GnackTrack is an Ubuntu-based distribution and live CD featuring a collection of utilities for penetration testing.

104. gNewSense
A product sponsored by the Free Software Foundation, gNewSense is an Ubuntu-based Linux distribution released without any proprietary and non-free components, and several enhancements. Notably, all proprietary firmware, restricted modules and Ubuntu logos are removed, while the "Universe" repository is enabled by default and several GNU applications, such as Emacs and development libraries, as well as bsdgames and NetHack, are included in the default installation. The goal of the project is to produce a totally free (libre) Linux distribution.

GNOBSD is an OpenBSD-based live DVD which boots into a GNOME desktop and which includes a graphical system installer (written in Ruby) for transferring the system to a hard disk or a USB storage device. The system includes some popular desktop applications, such as Mozilla Firefox and MPlayer.

106. GNUstep Live CD
GNUstep live CD is a Debian-based Linux distribution containing GNUstep, network tools, multimedia software and games. GNUstep is an implementation of the OPENSTEP and Cocoa frameworks.

107. GParted LiveCD
GParted LiveCD is a business card-size live CD distribution with a single purpose - to provide tools for partitioning hard disks in an intuitive, graphical environment. The distribution uses X.Org, the light-weight Fluxbox window manager, and the latest 2.6 Linux kernel. GParted LiveCD runs on most x86 machines with a Pentium II or better.

108. Greenie Linux
Greenie Linux is a Slovak desktop distribution based on Ubuntu and optimised for users in Slovakia and the Czech Republic. Created as an operating system for every-day use, Greenie Linux combines a set of applications for home use, out-of-the-box functionality and Ubuntu repositories. The goal of this distribution is to create a user-friendly desktop system and a useful live CD.

109. Grml
Grml is a bootable CD (live CD) based on Debian GNU/Linux. It includes a collection of GNU/Linux software especially for users of text tools and system administrators. It also provides automatic hardware detection. Grml can be used as a rescue system, for analysing systems and networks, or as a working environment. Due to on-the-fly decompression, Grml includes about 2 GB of software and documentation on the CD.

110. Guadalinex
Guadalinex is a Linux distribution based on Ubuntu and developed by the government of Andalucía (Junta de Andalucía) in Spain.

111. Hacao Linux
Hacao Linux is a Vietnamese desktop distribution based on Puppy Linux. The project's main purpose is to provide a complete, yet light-weight operating system that can run on low-specification computers. The entire user interface of Hacao Linux has been translated into Vietnamese.

112. Helix
Helix is a customised distribution based on Ubuntu with excellent hardware detection and many applications dedicated to incident response and forensics.

113. Honeywall CDROM
Honeywall CDROM is a CentOS-based distribution with the goal of capturing the activities of cyber threats and analysing the captured data. It has a GUI-based interface for system configuration, administration, and data analysis, and supports the new 3.x branch of Sebek. The CD, release under the General Public License, is a product of the Honeynet Project, a non-profit organisation dedicated to improving the security of the Internet by providing cutting-edge research for free.

114. IDMS Linux
IDMS Linux is a specialised distribution focused on stability and mission critical operation, normally required in server environments.

115. iMagic OS
iMagic OS is a commercial desktop Linux distribution based on Kubuntu. Its major features are ease of use, bleeding-edge desktop, easy installation, and compatibility with Microsoft software.

116. Imagineos
Imagineos (formerly GoblinX) is a bootable live CD distribution based on Slackware Linux. The primary goal for Imagineos is to create a more pleasant and functional desktop, standardising all icons and themes to make it easy for novice users to learn about available applications.

117. Incognito Live System
The (Amnesic) Incognito Live System is a Debian-based live CD/USB with the goal of providing complete Internet anonymity for the user. The product ships with several Internet applications, including web browser, IRC client, mail client and instant messenger, all pre-configured with security in mind and with all traffic anonymised. To achieve this, Incognito uses the Tor network to make Internet traffic very hard to trace.

118. Inquisitor
Inquisitor is an open-source hardware diagnostics, stress testing, certification and monitoring system, suitable for both enterprise and home use. Based on Debian/GNU Linux, it is customizable, modular and available in both serverless live CD/DVD format and server-controlled network boot production system.

119. Insigne Linux
Insigne Linux is a Brazilian desktop Linux distribution and live CD based on Debian's testing branch.

120. IPCop Firewall
IPCop Linux is a complete Linux Distribution whose sole purpose is to protect the networks it is installed on. After seeing the direction certain Linux Distributions were heading in, a group of dissatisfied users/developers decided that there was little reason for the idea of a GPL Linux Firewall Distribution of such potential to be, simply, extinguished. By implementing existing technology, outstanding new technology and secure programming practices IPCop is the Linux Distribution for those wanting to keep their computers/networks safe. The IPCop Linux Team is dedicated to doing the very best job possible to keep your systems safe, as you can see on our site. "The Bad Packets Stop Here!"

121. IPFire
IPFire is a Linux distribution that focusses on easy setup, good handling and high level of security. It is operated via an intuitive web-based interface which offers many configuration options for beginning and experienced system administrators. IPFire is maintained by developers who are concerned about security and who update the product regularly to keep it secure. IPFire ships with a custom package manager called Pakfire and the system can be expanded with various add-ons.

122. Jibbed
Jibbed is a (non-installable) live CD based on NetBSD. It is built from the latest NetBSD sources from the HEAD branch. The third-party applications provided on the CD are the latest versions, including experimental packages from wip-pkgsrc.

123. Joli OS
Joli OS is an Ubuntu-based Linux distribution. It is geared towards extreme user-friendliness so that any computer user can install it with just one click. Besides the standard ISO image, the distribution is also provided as a Windows executable file which can resize an existing Windows partition and install Joli OS as an alternative operating system. Other Joli OS features include heavy orientation towards web application and services, online backup option, web-based software installation interface, inclusion of proprietary hardware drivers and non-free media codecs, and extensive social networking features.

124. JoLinux
JoLinux is a Brazilian desktop Linux distribution for x86_64 platforms based on Slackware Linux.

125. K12Linux
K12Linux is Linux Terminal Server Project ( integrated with Fedora, in a convenient Live USB or DVD media installer. Since 1999, LTSP has empowered many schools and businesses with Linux-based terminal servers and thin clients, allowing low-cost clients or recycled computers to become powerful Linux desktop machines. K12Linux allows easy deployment of a Linux terminal server, capable of serving entire networks of netboot diskless clients. Clients login to the central terminal server, where they can use any Linux desktop environment and most desktop applications. Significant long-term cost savings are made possible by central management of software and accounts.

126. kademar Linux
The kademar Linux distribution is a complete desktop Linux operating system based on Debian GNU/Linux. Compared to its parent, it includes more intuitive system management and better hardware support, including support for Bluetooth, WiFi, ACPI power management, NTFS, Lightscribe, USB, web cams, TDT/DVB, and other devices. The distribution supports English, Spanish, and Catalan languages and provides separate DVD edition with more applications as well as a light-weight edition for older computers. The distribution also includes a graphical system configuration tool called CADI.

127. KahelOS
KahelOS is a Linux distribution based on Arch Linux. Its desktop edition comes with pre-configured GNOME as the default desktop environment, GNOME Office productivity suite, Epiphany web browser, GIMP image manipulation program, and other popular GTK+ and GNOME applications. Like Arch Linux, KahelOS maintains a rolling-release model of updating software packages using its parent's repositories. A server edition is also available. Both the desktop and server editions come in the form of installation CDs with text-based installers, but no live media.

KANOTIX is a Linux distribution based on the latest stable release of Debian GNU/Linux. It is built on top of a latest kernel which is carefully patched with fixes and drivers for most modern hardware. Although it can be used as a live CD, it also includes a graphical installer for hard disk installation. The user-friendly nature of the distribution is further enhanced by a custom-built control centre and specialist scripts.

129. Karoshi
Karoshi is a free and open source school server operating system based on Ubuntu. Karoshi provides a simple graphical interface that allows for quick installation, setup and maintenance of a network.

130. Kiwi Linux
Kiwi Linux is a modified Ubuntu live CD for the i386 architecture. It includes Romanian and Hungarian localisations, multimedia codecs, encrypted DVD support, Flash and Java plugins for Firefox, PPPoE GUI for accessing local Internet services (Clicknet and RDS) and write support for NTFS partitions.

131. Knoppel
Knoppel is a Greek distribution for the desktop, based on Debian's testing branch.

Knoppix is a bootable CD with a collection of GNU/Linux software, automatic hardware detection, and support for many graphics cards, sound cards, SCSI and USB devices and other peripherals. Knoppix can be used as a Linux demo, educational CD, rescue system, or adapted and used as a platform for commercial software product demos. It is not necessary to install anything on a hard disk. Due to on-the-fly decompression, the CD can have up to 2 GB of executable software installed on it.

133. KnoSciences
KnoSciences is a Knoppix-based bootable CD with a collection of GNU/Linux software, automatic hardware detection, and support for many graphics cards, sound cards, SCSI and USB devices and other peripherals. It is designed for use in educational institutions.

134. Kongoni GNU/Linux
Kongoni GNU/Linux is a Slackware-based, desktop-oriented GNU/Linux distribution and live CD. Its main features include a graphical installer, a Kongoni Integrated Setup System (KISS), and an easy-to-use Ports Installation GUI (PIG). The distribution's package management borrows its main concepts from BSD ports, with an intuitive graphical package installer that compiles and installs programs from source code on the user's system.

135. Kororaa Linux
Kororaa Linux was born out of a desire to make Linux easier to use for non-experts. While it has a long history based on Gentoo, in 2010 it was reborn as a Fedora remix and live DVD using a customised KDE as the default desktop. It includes various tweaks and extras to make the system "just work" out of the box.

136. Kubuntu
Kubuntu is a free, user-friendly Linux distribution based on KDE's desktop software and on the award-winning Ubuntu operating system. It has a biannual release cycle and at least 18 months of free security updates for each release. Besides providing an up-to-date version of the KDE desktop at the time of the release, the project also releases updated KDE packages throughout the lifetime of each release.

137. Kwort Linux
Kwort is a CRUX-based Linux distribution that uses the GTK+ toolkit and the Openbox window manager. Its most prominent feature is a package manager, called kpkg, for retrieving packages from download mirrors.

138. Legacy OS
Legacy OS (formerly TEENpup Linux) is a distribution based on Puppy Linux. Although the original concept was to create a flavour of Puppy Linux with more applications and a more appealing desktop aimed at teenage users, Legacy OS has now grown to become a general purpose distribution. It comes with a large number of applications, browser plugins and media codecs as standard software. Despite these enhancements Legacy OS is still perfectly suitable for installation on older and low-resource computers, as well as modern hardware.

139. LinEx
LinEx is a Linux distribution developed by the Extremadura Regional Government in Spain. gnuLinEx is based on Debian GNU/Linux, a distribution that, thanks to its design, makes it easy to create other distributions that can inherit its advantages and get rid of some of its faults (for example, the difficulty of setup and configuration). By using a modified Debian distribution, the Extremadura Regional Government has benefited from the fact that there is a large amount of varied software for it.

140. LinHES
LinHES is an attempt to make the installation of GNU/Linux and MythTV as trivial as possible. It includes everything needed to get your set-top box up and running in as little time as possible. LinHES is based on Arch Linux and is targeted at anyone looking for a set-top box solution.

141. Linpus Linux
Linpus Linux is a commercial, Fedora-based distribution developed by Linpus Technologies, a Linux company with headquarters in Taipei, Taiwan and a development office in Shanghai, China. The product's main features are support for both traditional and simplified Chinese, LSB 2.0 certification, support for Unicode character sets, friendly KDE desktop, and compatibility with a wide range of computer hardware.

142. Linux Caixa Mágica
Caixa Mágica is a Portuguese Linux distribution for desktops and servers. The project's early versions were based on SUSE Linux and later on Mandriva Linux, but starting from version 16 Caixa Mágica is built from Ubuntu. It features the GNOME desktop environment.

143. Linux Deepin
Linux Deepin (formerly Hiweed GNU/Linux) is an easy-to-use Chinese distribution based on Ubuntu. Its features include preconfigured Chinese applications and tools, such as Chinese (simplified) input method called Yong, the Evermore office suite, Chinese-English and English-Chinese dictionaries, and Chinese (simplified) TrueType fonts. It also features a customised start menu, a Mac OS X-like application launcher, and other usability enhancements.

144. Linux From Scratch
Linux From Scratch (LFS) is a project that provides you with the steps necessary to build your own custom Linux system. There are a lot of reasons why somebody would want to install an LFS system. The question most people raise is "why go through all the hassle of manually installing a Linux system from scratch when you can just download an existing distribution like Debian or Redhat". That is a valid question which I hope to answer for you. The most important reason for LFS's existence is teaching people how a Linux system works internally. Building an LFS system teaches you about all that makes Linux tick, how things work together, and depend on each other. And most importantly, how to customize it to your own taste and needs.

145. Linux LiveCD Router
Linux LiveCD Router is a Linux distribution designed to share a broadband connection over WiFi. It can be used with DSL, cable modem, T1, ISDN, and dial-up connections. It can also be used it as a firewall, or as an access point for most WiFi cards. Linux LiveCD Router does not require any installation, but requires a dedicated computer to boot and run the CD.

146. Linux Mangaka
Linux Mangaka is a desktop Linux distribution originally designed primarily for the fans of Japanese Manga and Anime, but eventually evolving into a complete, beginner-friendly operating system with complete multimedia support. Based on Ubuntu with GNOME and Google desktop, the distribution includes a large variety of programs for graphics design, many freely available Google applications, a number of games, and an innovative set of desktop themes.

147. Linux Mint
Linux Mint is an Ubuntu-based distribution whose goal is to provide a more complete out-of-the-box experience by including browser plugins, media codecs, support for DVD playback, Java and other components. It also adds a custom desktop and menus, several unique configuration tools, and a web-based package installation interface. Linux Mint is compatible with Ubuntu software repositories.

148. Linux-EduCD
Linux-EduCD is a PCLinuxOS-based live DVD developed by Poland's SIMP Studium Techniki. It focuses on education, graphics, office and multimedia use and is designed specifically for use in Polish educational institutions.

149. linuX-gamers Live DVD
The linuX-gamers Live DVD is a bootable medium with a collection of popular 3D games. It contains both the NVIDIA and ATI proprietary Linux drivers and includes the following games: BzFLag, Enemy Territory, Glest, Nexuiz, Sauerbraten, Torcs, Tremulous, True Combat: Elite, Warsow and World of Padman. Although the live DVD is based on Arch Linux, it does not offer any desktop Linux functionality except gaming.

150. LinuxConsole
LinuxConsole is an independently developed Linux live CD with different editions designed for desktops, servers, gaming consoles, and old computers. Its primary characteristics are easy installation, extensive choice of software in the form of modules, and excellent hardware detection.

151. LinuxTLE
LinuxTLE is a community Linux distribution developed in Thailand and designed for the Thai speaking audience. The early versions were based on Red Hat Linux and Fedora Core, but starting with version 8.0, the developers have chosen Ubuntu as the distribution's new base system.

152. Litrix Linux
Litrix is a desktop Linux distribution and live DVD based on Gentoo Linux.

153. LliureX
LliureX is a project of the Council of Culture, Education and Sport at the Municipality of Valencia, Spain. The LliureX distribution is an Edubuntu-based live and installation DVD with support for Valencian (a dialect of Catalan) and Spanish. It is intended as an operating system for educational institutions in the Valencia region. LliureX uses exclusively Free Software and is distributed free of charge.

154. Lubuntu
Lubuntu is a fast, lightweight and energy-saving variant of Ubuntu using the LXDE (Lightweight X11 Desktop Environment) desktop. It is intended to have low-resource system requirements and is designed primarily for netbooks, mobile devices and older PCs.

155. Lunar Linux
Lunar is a source based Linux distribution with a unique package management system which builds each software package, or module, for the machine it is being installed on. Though it can take a while to do a complete Lunar installation it's worth it as it tends to be quite fast, once installed! In the beginning Lunar was a fork of Sorcerer GNU Linux (SGL). The fork occurred in late January to early February of 2002 and was originally made up of a small group of people who wanted to collaboratively develop and extend the Sorcerer technology. The original name for the project was Lunar-Penguin but the group decided to re-christen it Lunar Linux while the Lunar-Penguin name has become a sort of umbrella which the team could use if they decide to collaboratively develop something besides Lunar Linux.

156. m0n0wall
m0n0wall is a project aimed at creating a complete, embedded firewall software package that, when used together with an embedded PC, provides all the important features of commercial firewall boxes (including ease of use) at a fraction of the price (free software). m0n0wall is based on a bare-bones version of FreeBSD, along with a web server (thttpd), PHP and a few other utilities. The entire system configuration is stored in one single XML text file to keep things transparent. m0n0wall is probably the first UNIX system that has its boot-time configuration done with PHP, rather than the usual shell scripts, and that has the entire system configuration stored in XML format.

157. Macpup
Macpup is a minimalist desktop Linux distribution based on Puppy Linux. It uses Enlightenment as the default window manager and provides a user interface resembling that of Apple's Mac OS X.

158. Madbox Linux
Madbox Linux is a lightweight, Ubuntu-based Linux distribution featuring the Openbox window manager, the SLiM display manager, and a simplified desktop configuration system.

159. Mageia
Mageia is a fork of Mandriva Linux formed in September 2010 by former employees and contributors to the popular French Linux distribution. Unlike Mandriva, which is a commercial entity, the Mageia project is a community project and a non-profit organisation whose goal is to develop a free Linux-based operating system.

160. Magic Linux
Magic Linux is a new distribution, which is specifically designed for Chinese users. Magic Linux is a non-commercial production completely developed by Linux enthusiasts with a simple motive in mind: say farewell to endless Chinese localisations from one Linux distribution to another and bring the native Chinese support to your desktop.

161. Mandriva Linux
Mandriva Linux was launched in 1998 under the name of Mandrake Linux, with the goal of making Linux easier to use for everyone. At that time, Linux was already well-known as a powerful and stable operating system that demanded strong technical knowledge and extensive use of the command line; MandrakeSoft saw this as an opportunity to integrate the best graphical desktop environments and contribute its own graphical configuration utilities to quickly become famous for setting the standard in Linux ease of use. In February 2005, MandrakeSoft merged with Brazil's Conectiva to form Mandriva S.A., with headquarters in Paris, France. The company's flagship product, Mandriva Linux, offers all the power and stability of Linux to both individuals and professional users in an easy-to-use and pleasant environment.

162. MAX: Madrid_Linux
Madrid_Linux, or MAX for short, is an GNU/Linux distribution created by the Council of Education of Madrid, Spain. It is a live operating system based on Ubuntu. Besides the ability to boot the operating system on any computer, the distribution includes a graphical installer with an option to resize FAT or NTFS partition and create space for installing MAX on a hard disk.

163. MCNLive
MCNLive is a Mandriva-based distribution designed to run from a USB Flash drive or a CD. It aims to be a user-friendly and complete mobile Linux solution for desktops and notebooks, running in live mode with dynamic hardware detection. It is developed by

164. MeeGo
MeeGo is an open-source Linux project which brings together the Moblin project, headed up by Intel, and Maemo, by Nokia, into a single open-source activity. It includes performance optimisations and features which enable the development of computational and graphically oriented applications and connected services, support for Internet standards, easy-to-use development environment based on Qt, and state-of-the-art Linux stack optimised for the size and capabilities of small footprint platforms and mobile devices. MeeGo currently targets platforms such as netbooks and entry-level desktops, handheld computing and communications devices, in-vehicle infotainment devices, connected TVs, and media phones.

165. MEPIS Linux
MEPIS Linux is a Debian-based desktop Linux distribution designed for both personal and business purposes. It includes cutting-edge features such as a live, installation and recovery CD, automatic hardware configuration, NTFS partition resizing, ACPI power management, WiFi support, anti-aliased TrueType fonts, a personal firewall, KDE, and much more.

166. MidnightBSD
MidnightBSD is a FreeBSD-derived operating system. A critical goal of the project is to create an easy-to-use desktop environment with graphical ports management, and system configuration using GNUstep. The vast majority of the operating system will maintain a BSD license. MidnightBSD was forked from FreeBSD 6.1 beta.

167. MilaX
MilaX is a small-size live-CD distribution which runs completely off a CD or a USB storage device. It is based on OpenSolaris Nevada and includes its basic features. It originally started as an experiment to see how much OpenSolaris software could fit on a mini-CD, but it eventually became a full-fledged OpenSolaris distribution. It is also possible to use MilaX as a rescue CD. It can be installed on storage media with a small capacity, including bootable business cards, USB flash drives, memory cards, and Zip drives. MilaX is free to use, modify and distribute.

168. MINIX
MINIX is a UNIX-like computer operating system based on a microkernel architecture. It is extremely small, with the part that runs in kernel mode in about 5,000 lines of source code, while the parts that run in user mode are divided into small, insulated modules which enhance system reliability. Originally designed as an educational tool, the latest versions of MINIX are also targetted at embedded systems and low-power laptops. By the project's own admission, MINIX is work in progress and is nowhere near as mature as BSD or Linux. It is released under a BSD-type licence.

169. Miracle Linux
Miracle Linux is a Linux distribution completely re-engineered as a secure, high performance back-end server for business workgroups in the enterprise. Miracle Linux exists in several editions: Miracle Linux for Samba, Miracle Linux for PostgreSQL, Miracle Linux with Oracle and Miracle Linux Server OS, all of which are based on Miracle Linux Standard Edition. New editions for the IA-64 platform and for mission critical applications with clustering capabilities are currently being developed.

170. MirOS BSD
MirOS is an operating system based on OpenBSD and synchronised with the ongoing development of its parent. The most important differences between OpenBSD and MirOS include a completely rewritten bootloader and boot manager, a slim base system without NIS, Kerberos, BIND and i18n, binary security updates for stable releases, and current versions of the GNU developer toolchain.

171. Moblin
Moblin is an open source project focused on building a Linux-based platform optimised for mobile devices including netbooks, mobile Internet devices, and in-vehicle infotainment systems. The central piece of the architecture is an independent layer that provides one uniform way to develop such devices. Underneath the Moblin Core sits the Linux kernel and device drivers specific to the hardware platform, and above the Moblin Core are the specific user interface and user interaction model for the target device.

172. MoLinux
MoLinux is an Ubuntu-based Linux distribution developed by the government of Castilla la Mancha in Spain.

173. Momonga Linux
Momonga Linux is a Linux distribution developed in a "bazaar" model style among its user community. Why momonga? you may wonder... A momonga (aka Pteromys momonga) is a flying squirrel found both in Europe and Asia. It's an animal known for a self-asserting behaviour, despite its small size. We, at the Momonga Project, like the momonga, may be small and not well-known, but we do express ourselves without fear or favour, so hopefully a new user can feel our enthusiasm and belief from the Momonga Linux. Also, an installer for Momonga Linux is also called momonga. Taking over its name, it does the job quickly and efficiently, just like a momonga.

174. Monomaxos
Monomaxos is an Ubuntu-based distribution whose purpose is to provide a complete out-of-the-box functional Linux operating system by including browser plugins, media codecs, support for DVD playback, Java, Flash and other components. It also adds a custom desktop and menus, and a modified Wubi installer for making installation very easy. Monomaxos is compatible with Ubuntu software repositories.

175. moonOS
moonOS is a complete, Ubuntu-based distribution featuring the LXDE and Enlightenment 17 desktop managers and imaginative, original artwork. A project created and designed by Cambodian artist Chanrithy Thim, moonOS is intended as an operating system for any desktop, laptop or virtual machine.

176. Musix GNU/Linux
Musix GNU+Linux is a Debian-based distribution featuring a collection of free software for audio production, graphic design and video editing.

177. Myrinix
Myrinix is smart and centralised operating system for the home. Its main feature is the ability to connect a plasma TV or large LCD screen to a central server that can record and play DVD or surf the Internet on the big screen. Myrinix is a live CD based on Debian GNU/Linux and sidux.

178. Mythbuntu
Mythbuntu is an Ubuntu-based distribution and live CD focused upon setting up a standalone MythTV system similar to KnoppMyth or Mythdora. It can be used to install a standalone frontend, backend, or combination machines. Mythbuntu uses Xfce as its default desktop and provides a graphical Control Centre to configure the system.

179. MythDora
MythDora is a specialized Linux distribution based on Fedora and MythTV, designed to simplify the installation of MythTV on a home theatre PC. In addition to MythTV and its plugins, MythDora includes extra Linux packages that are necessary for MythTV to run, and drivers for hardware commonly encountered in machines intended to run MythTV. Also included in MythDora are several video game emulators, and extra tools and scripts.

180. Nature's Linux
Nature's Linux is a Linux-based operating system developed by Japan's Nature's Linux Alliance. Its main focus is security.

181. NeoShine Linux
NeoShine Linux is a Red Hat-based Linux distribution developed by Chinasoft Network Technology Company in Beijing, China.

182. NepaLinux
NepaLinux is a Debian-based live and installation CD localised into the Nepali language, complete with Nepali fonts, input method, spell and grammar checker, dictionary, and GNOME theme. Besides the distribution, the project also provides extensive documentation for localisation into Nepali under Linux and is the leading advocate of open source software in the country.

183. NetBSD
NetBSD is a free, secure, and highly portable UNIX-like Open Source operating system available for many platforms, from 64-bit AlphaServers and desktop systems to handheld and embedded devices. Its clean design and advanced features make it excellent in both production and research environments, and it is user-supported with complete source. Many applications are easily available through The NetBSD Packages Collection.

184. Netrunner
Netrunner is an Ubuntu-based distribution with a focus on desktop computing. It boasts a carefully tuned KDE 4 desktop with many integrated GNOME applications to offer users a selected mix of popular and powerful applications.

185. NetSecL
NetSecL is a security-focused distribution and live DVD based on openSUSE (starting from version 3.0, previous versions were based on Slackware Linux). To improve the security aspect of the distribution, servers have been removed, incoming ports closed and services turned off. Additionally, several penetration tools have been included.

186. Network Security Toolkit
Network Security Toolkit (NST) is a bootable live CD based on Fedora Core. The toolkit was designed to provide easy access to best-of-breed open source network security applications and should run on most x86 platforms. The main intent of developing this toolkit was to provide the network security administrator with a comprehensive set of open source network security tools. What we find rather fascinating with NST is that we can transform most x86 systems (Pentium II and above) into a system designed for network traffic analysis, intrusion detection, network packet generation, wireless network monitoring, a virtual system service server, or a sophisticated network/host scanner.

187. Nexenta OS
Nexenta OS is a free and open source operating system combining the OpenSolaris kernel with GNU application userland. Nexenta OS runs on Intel/AMD 32-/64-bit hardware and is distributed as a single installable CD. Upgrades and binary packages not included on the CD can be installed from Nexenta OS repository using Advanced Packaging Tool. In addition, source based software components can be downloaded from network repositories available at Debian/GNU Linux and Ubuntu Linux.

188. NexentaStor
NexentaStor is an enterprise-class unified storage solution built upon the foundation of the open-source file system Nexenta Core Platform, including the ZFS file system. NexentaStor adds to the open source foundation a complete set of managed features, including ZFS and synchronous block level replication, integrated search, console and graphical user interfaces, and optional advanced features, such as management of storage for leading virtualised environments, enhanced mapping and management for Fiber Channel and iSCSI environments, and active/active high availability. A free "developer's edition" based on the most recent stable Nexenta Core Platform is available free of charge for users with less than 4 terabyte of used disk space.

189. Niigata Linux
Niigata Linux is a Fedora-based Japanese Linux distribution designed as a web application environment for web development with Apache and PostgreSQL.

190. NimbleX
NimbleX is a Slackware-based live CD which is able to boot from a CD, USB storage device or from another computer on the Local Area Network. Its main features are small size, a varied selection of software packages, and good hardware support.

191. Nova
Nova is a user-friendly, desktop-oriented Linux distribution developed by the University of Computer Sciences in Havana, Cuba. In the product's early days the operating system was based on Gentoo Linux and Sabayon Linux, but starting from version 2.1 the developers have chosen Ubuntu as the base system.

192. Novell Linux, SUSE Linux Enterprise
SUSE Linux Enterprise is an interoperable platform for mission-critical computing.  SUSE Linux Enterprise Desktop is an enterprise-quality Linux desktop that's ready for routine business use.  It provides interoperability with existing systems and many office applications.  It also delivers flexibility for desktop and notebook clients, thin-client devices, and high-end technical workstations.  SUSE Linux Enterprise Server is designed to handle mission-critical workloads. It is an open, scalable, solution that comes with integrated Xen-based virtualization, application security, and systems management across a range of hardware architectures.  SUSE Linux Enterprise Server provides interoperability with Windows and other platforms, and it provides a secure foundation for a broad range of edge, departmental and data center needs.

193. NuTyX
NuTyX is an i686-optimised, French Linux distribution created from Linux From Scratch and Beyond Linux From Scratch, with a package manager borrowed from CRUX. The project releases a number of different editions, including an installation CD and DVD, as well as a 4 GB live USB. The distribution is designed primarily for French-speaking intermediate and advanced Linux users.

194. O-Net
O-Net is an Italian commercial Linux distribution created by HI-NET.

195. Ojuba
Ojuba is a Fedora-based Linux distribution whose main focus is to provide the best Arabic support, as well as some Islamic tools such as Hijra (Hijri calendar) and Minbar (prayer time indicator). It is available as an installation DVD or installable live CD.

196. One Laptop Per Child (OLPC)
One Laptop Per Child (OLPC) is an initiative to build a low-cost laptop computer with a pre-installed operating system and applications designed for children in developing countries. The operating system is a Linux-based solution, a heavily customised edition of Fedora Core with a special graphical user interface called Sugar. Among applications, the system includes a web browser built on Xulrunner, a simple document viewer based on Evince; the AbiWord word processor, an RSS reader, email, chat and VOIP clients, a multimedia authoring and playback environment, a music composition toolkit, graphics toolkits, games, a shell, and a debugger.

197. Open Xange
Open Xange is an easy-to-use, Fedora-based desktop Linux distribution featuring the KDE desktop.

198. OpenBSD
The OpenBSD project produces a FREE, multi-platform 4.4BSD-based UNIX-like operating system. Our efforts emphasize portability, standardization, correctness, proactive security and integrated cryptography. OpenBSD supports binary emulation of most programs from SVR4 (Solaris), FreeBSD, Linux, BSD/OS, SunOS and HP-UX. OpenBSD is freely available from our FTP sites, and also available in an inexpensive 3-CD set.

199. Openfiler
Openfiler is a storage management operating system based on rPath Linux. It is powered by the Linux kernel and open source applications such as Apache, Samba, Linux Volume Management, ext3, Linux NFS and iSCSI enterprise target. Openfiler combines these ubiquitous technologies into a small, easy-to-manage solution fronted by a powerful web-based management interface. Openfiler allows building a Network Attached Storage (NAS) and/or Storage Area Network (SAN) appliance, using industry-standard hardware, in less than 10 minutes of installation time.

200. OpenIndiana
OpenIndiana is a continuation of the OpenSolaris operating system. It was conceived during the period of uncertainty following the Oracle takeover of Sun Microsystems, after several months passed with no binary updates made available to the public. The formation proved timely, as Oracle discontinued OpenSolaris soon after in favour of Solaris 11 Express, a binary distribution with a more closed development model to début later this year. OpenIndiana is part of the Illumos Foundation, and provides a true open-source community alternative to Solaris 11 and Solaris 11 Express, with an open development model and full community participation.

201. openmamba GNU/Linux
openmamba GNU/Linux is a distribution for personal computers (Intel i686-compatible) that can be used on notebooks, desktops and servers. It works as an installable live CD, offering out-of-the box support for proprietary graphics drivers and wireless network cards, a variety of media codecs and 3D desktop with KDE. The distribution, which has roots in the discontinued QiLinux project, uses APT for RPM and Synaptic as its package management tools.

202. openSUSE
The openSUSE project is a community program sponsored by Novell. Promoting the use of Linux everywhere, this program provides free, easy access to openSUSE, a complete Linux distribution. The openSUSE project has three main goals: make openSUSE the easiest Linux for anyone to obtain and the most widely used Linux distribution; leverage open source collaboration to make openSUSE the world's most usable Linux distribution and desktop environment for new and experienced Linux users; dramatically simplify and open the development and packaging processes to make openSUSE the platform of choice for Linux developers and software vendors.

203. Openwall GNU/*/Linux
Openwall GNU/*/Linux (or Owl for short) is a small security-enhanced Linux distribution for servers, appliances, and virtual appliances. Owl live CDs with remote SSH access are also good for recovering or installing systems (whether with Owl or not). Another secondary use is for operating systems and/or computer security courses, which benefit from the simple structure of Owl and from the inclusion of the complete build environment.

204. Ophcrack LiveCD
Ophcrack LiveCD is a specialist SliTaz-based live CD containing Ophcrack, an open source Windows password cracker that uses rainbow tables. The graphical program included on the live CD is reputed for being able to crack alphanumeric Windows passwords of up to 14 characters in usually just a few seconds.

205. Oracle Linux
Oracle Linux is an enterprise-class Linux distribution supported by Oracle. According to the project's web site, "Oracle starts with Red Hat Linux, removes Red Hat trademarks, and then adds Linux bug fixes." Oracle Linux is, and intends to remain, fully compatible with Red Hat Enterprise Linux.

PAIPIX is a compilation of free software, based on Debian Live, that is meant to be used in any environment, but with special vocation for educational use in the information and instrumentation technologies. It is developed by the College of Sciences at the University of Lisbon.

207. paldo GNU/Linux
paldo is a hybrid (source and binary), Upkg-driven GNU/Linux distribution and live CD. Besides aiming to be simple, pure, up-to-date and standards-compliant, paldo offers automatic hardware detection, one application per task, and a standard GNOME desktop.

208. PapugLinux
PapugLinux is a minimal GNU/Linux live CD based on the Gentoo Linux distribution for x86 computers. The goal of PapugLinux is to provide a minimal but functional free operating system which can be run on most computers, from old systems with as little as 64 MB of memory to the latest powerful configurations.

209. Pardus Linux
Pardus is a GNU/Linux distribution funded and developed by the Scientific & Technological Research Council of Turkey. Pardus has a range of unique features, such as Mudur, a start-up framework of Pardus to speed up the boot process, and PiSi, an efficient package management system with a user-friendly graphical interface.

210. Parsix GNU/Linux
Parsix GNU/Linux is a live and installation CD based on KANOTIX and Debian. It uses GNOME as its default desktop environment. Parsix GNU/Linux supports Persian keyboard and user can switch to Persian with Alt+Ctrl or Ctrl+Shift keys. It also includes the xFarDic English-Persian dictionary and several free Persian fonts from FarsiWeb and FPF projects.

211. Parted Magic
Parted Magic is a small live CD/USB/PXE with its elemental purpose being to partition hard drives. Although GParted and Parted are the main programs, the CD/USB also offers other applications, such as Partition Image, TestDisk, fdisk, sfdisk, dd, ddrescue, etc.

212. PC-BSD
PC-BSD has as its goals to be an easy-to-install-and-use desktop operating system, based on FreeBSD. To accomplish this, it currently has a graphical installation, which will enable even UNIX novices to easily install and get it running. It will also come with KDE pre-built, so that the desktop can be used immediately. Currently in development is a graphical software installation program, which will make installing pre-built software as easy as other popular operating systems.

213. PC/OS
PC/OS is a user-friendly desktop and server Linux distribution based on Xubuntu. Some of its most interesting features include support for popular browser plugins, addition of packages for multimedia production, content creation and software development, and a BeOS-like desktop theme. PC/OS comes in several editions, including OpenDesktop, OpenWorkstation and WebStation.

214. PCLinuxOS
PCLinuxOS is a user-friendly Linux distribution with out-of-the-box support for many popular graphics and sound cards, as well as other peripheral devices. The bootable live CD provides an easy-to-use graphical installer and the distribution sports a wide range of popular applications for the typical desktop user, including browser plugins and full multimedia playback. The intuitive system configuration tools include Synaptic for package management, Addlocale to add support to many languages, Getopenoffice to install the latest, and Mylivecd to create a customised live CD.

215. PelicanHPC GNU Linux
PelicanHPC is a Debian-based live CD image with a goal to make it simple to set up a high performance computing cluster. The front-end node (either a real computer or a virtual machine) boots from the CD image. The compute nodes boot by Pre-Execution Environment (PXE), using the front-end node as the server. All of the nodes of the cluster get their file systems from the same CD image, so it is guaranteed that all nodes run the same software. The CD image is created by running a single script, which makes it possible to customise the live CD image with extra Debian packages.

216. Pentoo
Pentoo is a Gentoo-based Linux live CD with a selection of applications and tools designed to perform penetration testing.

217. Peppermint OS
Peppermint OS is a Lubuntu-based Linux distribution that aims to be lightning fast and easy on system resources. By employing Mozilla's Prism technology Peppermint integrates seamlessly with Cloud and web-based applications. The distribution's other features include automatic updates, easy step-by-step installation, sleek and user-friendly interface, and increased mobility by integrating directly with Cloud-based applications.

218. pfSense
pfSense is a m0n0wall-derived operating system. It uses Packet Filter, FreeBSD 6.x (or DragonFly BSD when ALTQ and CARP is finished), ALTQ for excellent packet queuing, and an integrated package management system for extending the environment with new features.

219. Phayoune Secure Linux
Phayoune Linux is a live distribution based on Linux From Scratch and optimised for USB storage devices. Besides standard desktop software, it also includes a variety of server applications, including a firewall, web server, mail server, database server, file server and application server.

220. Pinguy OS
Pinguy OS is an Ubuntu-based distribution targeted at beginning Linux users. It features numerous user-friendly enhancements, out-of-the-box support for multimedia codecs and browser plugins, a heavily tweaked GNOME user interface with enhanced menus, panels and dockbars, and a careful selection of popular desktop applications for many common computing tasks.

221. Plamo Linux
Plamo Linux is a Japanese Linux distribution based on Slackware Linux. The installer, and many text-based and graphical tools have been updated to include Japanese language support.

222. PLD Linux Distribution
PLD Linux Distribution is a free, RPM-based Linux distribution, aimed at the more advanced users and administrators, who accept the trade-offs of using a system that might require manual tweaking in exchange for flexibility. Simultaneous support for a wide variety of architectures and non-conservative approach to RPM usage provide the users with a consistent environment on almost all available architectures.

223. Plop Linux
Plop Linux is a small distribution that can boot from CD, DVD, USB flash drive (UFD), USB hard disk or from network with PXE. It is designed to rescue data from a damaged system, backup and restore operating systems, automate tasks and more.

224. Porteus
Porteus is a fast, portable and modular live CD/USB medium based on Slackware Linux. The distribution started as a community remix of Slax, another Slackware-based live CD (which is no longer actively maintained), with KDE 3 as the default desktop for the i486 edition and a stripped-down KDE 4 as the desktop environment for the x86_64 flavour. The lightweight LXDE is available as an alternative desktop environment.

225. Poseidon Linux
Poseidon Linux is a GNU/Linux distribution designed for academic and scientific use. Although based on Ubuntu, it enhances its parent by adding a large number of applications for GIS/maps, numerical modelling, 2D/3D/4D visualisation, statistics, tools for creating simple and complex graphics, programming languages and more. The usual software for daily use, such as office suite, Internet browser, instant messaging and chat clients are also included.

226. pQui Linux
pQui Linux is a Brazilian desktop-oriented distribution based on Slackware Linux.

227. Privatix Live-System
Privatix Live-System is a free, portable, encrypted live CD which can be installed on an USB flash drive or an external hard drive. Based on Debian GNU/Linux, it is designed for safe editing and carrying sensitive data, for encrypted communication, and anonymous web surfing (with Tor, Firefox and Torbutton).

228. Puppy Linux
Puppy Linux is yet another Linux distribution. What's different here is that Puppy is extraordinarily small, yet quite full-featured. Puppy boots into a ramdisk and, unlike live CD distributions that have to keep pulling stuff off the CD, it loads into RAM. This means that all applications start in the blink of an eye and respond to user input instantly. Puppy Linux has the ability to boot off a flash card or any USB memory device, CDROM, Zip disk or LS/120/240 Superdisk, floppy disks, internal hard drive. It can even use a multisession formatted CD-RW/DVD-RW to save everything back to the CD/DVD with no hard drive required at all.

229. Puredyne
Puredyne is an Ubuntu-based Linux distribution aimed at creative people. It provides a number of creative applications, alongside a solid set of graphic, audio and video tools in a fast, minimal package. It includes software for everything an artist might need - from sound art to innovative film-making. Puredyne is optimised for use in real-time audio and video processing and it distinguishes itself by offering a low latency kernel and high responsiveness needed by artists working in this field.

230. PureOS
PureOS and PureOSlight are GNU/Linux live CDs based on Debian's testing repository. These are desktop distributions that can be used as live media (CD or USB) or as full-featured operating systems installed on a hard disk. PureOS is a 700 MB live CD with KDE, Iceweasel, Icedove,, Songbird, VLC and K3B. PureOSlight is a small 300 MB live CD with Xfce, Iceweasel, Icedove, AbiWord, Gnumeric and Exaile.

231. Qimo 4 Kids
Qimo 4 Kids is a distribution of Linux, derived from the popular Ubuntu, customised for use by children ages 3 and up. It comes pre-installed with free and open source games that are both educational and entertaining, with many more educational titles available for download from Ubuntu. The interface of Qimo 4 Kids has been specifically designed to be easy to navigate by the youngest of users.

232. Qomo Linux
Qomo Linux (formerly Everest Linux) is a Chinese distribution developed by Red Flag Linux and managed as a community project (in a fashion similar to Red Hat's Fedora or Novell's openSUSE). Its main features are user-friendly desktop, excellent hardware detection, full support for simplified Chinese, and a 6-month release cycle.

233. Quirky
Quirky, a sister project of Puppy Linux, is a Linux distribution built with a custom tool called Woof. The underlying infrastructure, such as boot-up and shut-down scripts, setup tools, hardware detection, desktop management, user interface, speed and general ease-of-use are common across all distributions built with Woof, but a specific build will have a different package selection and further customisation (even totally different binary packages). Quirky is developed by the founder of Puppy Linux and Woof to push the envelope a bit further, to explore some new ideas in the underlying infrastructure -- some of which may be radical or odd, hence the name Quirky.

234. Red Flag Linux
Red Flag Software Co., Ltd. (Red Flag Software) was founded by Software Research Institute of the Chinese Academy of Sciences and NewMargin Venture Capital. We are focused on the development and marketing of Linux-based operating systems and application software on multiple platforms for the constantly growing base of Chinese technology users. Our goal is "Creating Incentives for Networking Life." The company will continue to develop a modern management pattern we call the "Red Flag Way." This is client driven customization based on our business model involving free software.

235. Red Hat Enterprise Linux
Red Hat is the leader in development, deployment, and management of Linux and open source solutions for Internet infrastructure - ranging from embedded devices to secure Web servers. Red Hat was founded in 1994 by visionary entrepreneurs Bob Young and Marc Ewing. Open source is the foundation of our business model. It represents a fundamental shift in how software is created. The code that makes up the software is available to anyone. Developers who use the software are free to improve the software. The result: rapid innovation. Red Hat solutions combine Red Hat Linux, developer and embedded technologies, training, management services, technical support. We deliver this open source innovation to our customers via an Internet platform called Red Hat Network. Red Hat is headquartered in Raleigh, North Carolina, USA.

236. redWall Firewall
redWall Firewall is a bootable CD-ROM firewall based on Gentoo Linux. Its goal is to provide a feature-rich firewall solution together with a web-based interface for all the generated log files. redWall Firewall comes with Snort, SnortSam, DansGuardian and support for fwbuilder, SpamAssassin, reporting, VPN and mail alerts. Configuration files are stored on a floppy disk or a USB pen drive.

237. Resulinux
Resulinux is a Brazilian desktop distribution and live CD based on Debian GNU/Linux. Among its unique characteristics are TexasFlood boot system, which dramatically shortens the operating system's boot time, and a software update utility called LiveUpdate.

238. RIPLinuX
Recovery Is Possible (RIP) is a Slackware-based CD or floppy boot/rescue/backup/maintenance system. It has support for a lot of filesystem types (Reiserfs, Reiser4, ext2/3, iso9660, UDF, XFS, JFS, UFS, HPFS, HFS, MINIX, MS DOS, NTFS, and VFAT) and contains a bunch of utilities for system recovery. It also has IDE/SCSI/SATA, PCMCIA, RAID, LVM2, and Ethernet/DSL/cable/PPP/PPPOE network support.

239. Rocks Cluster Distribution
Rocks is a complete "cluster on a CD" solution for x86 and x86_64 Red Hat Linux clusters. Building a Rocks cluster does not require any experience in clustering, yet a cluster architect will find a flexible and programmatic way to redesign the entire software stack just below the surface (appropriately hidden from the majority of users). Although Rocks includes the tools expected from any clustering software stack (PBS, Maui, GM support, Ganglia, etc), it is unique in its simplicity of installation.

240. rPath Linux
rPath Linux is a Linux distribution built with the new Conary distributed software management system. Conary is designed, based on many years of Linux software packaging and distribution development experience, to automate many of the tasks that have made it difficult to build Linux distributions. rPath's mission is to provide system software that is easily tailored to suit unique application needs. rPath Linux, built with the Conary distributed software management system, is not only a distribution in its own right, but also a base technology explicitly designed to enable you to create purpose-built operating system images using the rBuilder Online technology.

241. Runtu
Runtu is a Russian desktop Linux distribution based on Ubuntu. It features full support for Russian and a variety of extra applications, tools and media codecs.

242. Sabayon Linux
"Sabayon Linux is a Gentoo-based distribution which follows the works-out-of-the-box philosophy, aiming to give the user a wide number of applications that are ready for use and a self-configured operating system. Sabayon offers the user an easy-to-use workspace with a captivating look, good hardware detection and a large number of up-to-date software packages installed by default, with additional software available from a repository. Sabayon is available in several flavors featuring respectively the KDE, GNOME, LXDE, Xfce and Enlightenment desktop environments.

243. Sabily
Sabily (formerly Ubuntu Muslim Edition) is a free, open source operating system based on Ubuntu. Its main feature is the inclusion of Islamic software, such as prayer times, a Qur'an study tool and a web content filtering utility.

244. SalineOS
SalineOS is a lightweight and fast open-source operating system built on the Debian GNU/Linux repositories and uses Xfce as the desktop environment.

245. Salix OS
Salix OS is a Slackware-based Linux distribution that is simple, fast, easy to use and compatible with Slackware Linux. Optimised for desktop use, Salix OS features one application per task, custom package repositories, advanced package management with dependency support, localised system administration tools and innovative artwork.

246. SAMity Linux
SAMity Linux, a live and installation CD based on Unity Linux, is an easy-to-use, fast and clean Xfce Linux desktop for home users.

247. Satux
Satux is a Brazilian desktop Linux distribution and live DVD based on Debian GNU/Linux.

248. SchilliX
SchilliX is an OpenSolaris-based distribution which runs from CD and can be optionally installed on a hard disk or a USB memory stick.

249. Scientific Linux
Scientific Linux is a recompiled Red Hat Enterprise Linux, co-developed by Fermi National Accelerator Laboratory and the European Organization for Nuclear Research (CERN). Although it aims to be fully compatible with Red Hat Enterprise Linux, it also provides additional packages not found in the upstream product; the most notable among these are various file systems, including Cluster Suite and Global File System (GFS), FUSE, OpenAFS, Squashfs and Unionfs, wireless networking support with Intel wireless firmware, MadWiFi and NDISwrapper, Sun Java and Java Development Kit (JDK), the lightweight IceWM window manager, R - a language and environment for statistical computing, and the Alpine email client.

250. Securepoint Security Suite
Securepoint Security Solutions offers a full-featured suite of firewall tools designed for enterprisewide deployment. Not only can it protect an internal network from outside attacks, it also helps segregate parts of your internal network and define custom protection rules for each. Securepoint lets you create and manage VPN tunnels for remote users and define traffic filters, reports, and alerts for your entire network. Securepoint Freeware is a very secure and free firewall solution for protecting your Internet gateway. Securepoint can as well be used with existing firewalls and to protect interconnected locations or divisions.

251. Server Optimized Linux
SoL (Server optimized Linux) is a Linux distribution completely independent from other Linux distributions. It was built from the original source packages and is optimised for heavy-duty server work. It contains all common server applications, and features XML boot and script technology that makes it easy to configure and make the server work.

252. Skolelinux
Skolelinux is the Debian-edu project's Custom Debian Distribution (CDD) in development. It is aiming to provide an out-of-the-box localised environment tailored for schools and universities. The out-of-the-box environment comes with 75 applications aimed at schools, as well as 15 network services pre-configured for a school environment. The simple, three-question installation requires minimal technical knowledge. Skolelinux is Debian, which means, among other things, that there are no license costs or worries, and that upgrade and maintenance of the software can be done over the Internet with the power of Debian's apt-get. The core goals of Skolelinux are localisation and ease of system administration.

253. Slackintosh
Slackintosh is a port of Slackware Linux to the PowerPC (Macintosh) processor architecture.

254. Slackware Linux
The Official Release of Slackware Linux by Patrick Volkerding is an advanced Linux operating system, designed with the twin goals of ease of use and stability as top priorities. Including the latest popular software while retaining a sense of tradition, providing simplicity and ease of use alongside flexibility and power, Slackware brings the best of all worlds to the table. Originally developed by Linus Torvalds in 1991, the UNIX-like Linux operating system now benefits from the contributions of millions of users and developers around the world. Slackware Linux provides new and experienced users alike with a fully-featured system, equipped to serve in any capacity from desktop workstation to machine-room server. Web, ftp, and email servers are ready to go out of the box, as are a wide selection of popular desktop environments. A full range of development tools, editors, and current libraries is included for users who wish to develop or compile additional software.

255. SLAMPP Live
SLAMPP is a Linux distribution which can boot and run directly from a DVD, with possibility to be installed onto hard disk. It is designed to be used as an instant home server. Just like other Linux live DVDs, SLAMPP makes it possible to test Linux without messing up the user's existing system. What makes SLAMPP different is the fact that it comes with pre-configured tools and applications that turn a personal computer into a home server. SLAMPP is built using Zenwalk Linux as its base and Slackware Linux for packages.

256. SliTaz GNU/Linux
SliTaz GNU/Linux is a mini distribution and live CD designed to run speedily on hardware with 256 MB of RAM. SliTaz uses BusyBox, a recent Linux kernel and GNU software. It boots with Syslinux and provides more than 200 Linux commands, the lighttpd web server, SQLite database, rescue tools, IRC client, SSH client and server powered by Dropbear, X window system, JWM (Joe's Window Manager), gFTP, Geany IDE, Mozilla Firefox, AlsaPlayer, GParted, a sound file editor and more. The SliTaz ISO image fits on a less than 30 MB media and takes just 80 MB of hard disk space.

257. SME Server
SME Server (known as e-smith at the time) was founded in January 1999 by Joseph and Kim Morrison. The company introduced the first version of its flagship software product, the e-smith server and gateway, in April 1999. By the end of the year, many thousands of e-smith servers were running in countries from Fiji to Finland. Word was spreading quickly among developers and systems integrators who needed a solid, easy-to-use server for their small-business customers. In July 2001, e-smith was acquired by Mitel Networks, in September 2004 by Lycoris, and the project is currently sponsored by Resource Strategies, Inc.

258. SmoothWall Express
SmoothWall is a family of Internet security products, designed to defend your users and your network from external attacks. SmoothWall Express is based on the Linux operating system. Linux is the ideal choice for security systems; it is well proven, secure, highly configurable and freely available as open source code. SmoothWall includes a hardened subset of the GNU/Linux operating system, so there is no separate OS to install. Designed for ease of use, SmoothWall is configured via a web-based GUI, and requires absolutely no knowledge of Linux to install or use.

259. Solaris Operating System
Solaris is a computer operating system, the proprietary Unix variant developed by Sun Microsystems. Early versions, based on BSD UNIX, were called SunOS. The shift to a System V code base in SunOS 5 was marked by changing the name to Solaris 2. Earlier versions were retroactively named Solaris 1.x. After version 2.6, Sun dropped the "2." from the name. Solaris consists of the SunOS UNIX base operating system plus a graphical user environment. Solaris is written in a platform-independent manner and is available for SPARC and x86 processors (including x86_64). Starting from version 10, the Solaris licence changed and the product was distributed free of charge for any system or purpose, but after the acquisition of Sun Microsystems by Oracle in 2009, the product is once again proprietary with a restrictive licence.

260. Sorcerer
Sorcerer is a source-based Linux distribution. Source tarballs are downloaded directly from software project home pages or as patches when an old source was previously downloaded. Sources are compiled for the architecture and with the optimisations that the system administrator specifies. Sorcerer has both command-line and menu-driven source management programs.

261. Source Mage GNU/Linux
Sourcemage is a source-based GNU/Linux distribution based on a Sorcery metaphor of 'casting' and 'dispelling' programs, which we refer to as 'spells'.

262. StartCom Linux
StartCom Enterprise Linux, which is based on the Red Hat AS source code, is the ultimate solution for middle-size servers to large data centres. The current version supports the largest commodity-architecture servers with up to 16 CPUs and 64GB (on x86 systems) of main memory, Global File System - for highly scalable, high performance data sharing in multi-system configurations. Included in this distribution is a comprehensive collection of open source server applications like mail, file (SMB/NFS), DNS, web, FTP, and a complete desktop environment.

263. STD - Security Tools Distribution
STD is a customised distribution of the Knoppix live Linux CD. STD focuses on information security and network management tools. It is meant to be used by both the novice looking to learn more about information security and the security professional looking for another swiss army knife for their tool kit. The tools are divided into the following categories: authentication, encryption utilities, firewalls, penetration tools, vulnerability assessment, forensic tools, honeypots, intrusion detection, packet sniffers and assemblers, network utilities, wireless tools, password auditing (crackers) and servers.

264. StressLinux
StressLinux is an openSUSE-based minimal Linux distribution that runs from a bootable CDROM or via PXE. It makes use of some utilities such as stress, cpuburn, hddtemp, lm_sensors, etc. It is dedicated to users who want to test their system(s) entirely on high load and monitor the health of these systems.

265. STUX GNU/Linux
STUX GNU/Linux is a Linux system that runs from a CD-ROM; STUX can automatically load and save main configuration and personal files on a writable partition. It is based on Slackware Linux.

266. SuliX
SuliX is a Hungarian, Fedora-based distribution for schools. Its main features are usability, Hungarian language support, "freshness" in terms of software updates and educational purpose. It can be used in schools, for IT education or as a Linux migration tool. The name "SuliX" comes from Hungarian: "suli" means "school" in child's language. SuliX is developed by a small group of teachers in Hungary.

267. Super OS
Super OS (formerly Super Ubuntu) is a modified version of Ubuntu with the goal of making it more usable, in particular for users without an internet connection, while trying to remain compatible with Ubuntu. Features compared to Ubuntu include better multimedia support, improved Internet experience (aMSN, Opera, Flash), App Runner, and other software, such as Java, Ubuntu Tweak and live USB creator.

268. Superb Mini Server
Superb Mini Server (SMS) is a Slackware-based server distribution with web, DNS, DHCP, file, print and fax servers, iptables firewall, mail server with spam filter and anti-virus scanner, and BitTorrent station. It also includes Webmin, a web-based administration tool, but no graphical desktop. SMS, which comes with Slackware's text-mode system installer, is built using Linux-Live scripts (from Slax) and can be used as a live CD for testing purposes.

269. SuperGamer
SuperGamer is a live DVD based on VectorLinux, intended to showcase gaming on Linux. The distribution is optimised for a gaming computer environment, with some tweaks to help speed up running from the live DVD. Extra games are added along with some demo editions of proprietary games. All games are native Linux games, but users wishing to run Windows games may install WINE or a related emulator, such as Cedega.

270. Suriyan
Suriyan is an Ubuntu-based distribution developed by Thai Open Source, an organisation that aims to promote free and open-source software in Thailand. The project's primary goal is to develop an easy-to-use alternative operating system with complete support for the Thai language.

271. Swift Linux
Swift Linux is a lightweight, antiX-based distribution featuring the IceWM window manager. Compared to its parent, Swift Linux includes extra applications, such as BleachBit (a tool for freeing up space and clearing private information), the office suite, and a wide variety of forensic analysis and data recovery utilities.

272. Syllable Server
Syllable Server is a small, efficient server operating system built to be similar to Syllable Desktop, but on the Linux kernel. Due to its light weight, Syllable Server is exceptionally suitable as a virtualisation platform for running other operating systems (or multiple instances of itself), using the QEMU emulator.

273. SystemRescueCd
SystemRescueCd is a Gentoo-based Linux system on a bootable CD-ROM or USB drive, designed for repairing a system and data after a crash. It also aims to provide an easy way to carry out administration tasks on a computer, such as creating and editing hard disk partitions. It contains many useful system utilities (GNU Parted, PartImage, FSTools) and some basic ones (editors, Midnight Commander, network tools). It aims to be very easy to use. The kernel of the system supports all of today's most important file systems, including ext2, ext3, ext4, ReiserFS, Reiser4FS, btrfs, XFS, JFS, VFAT, NTFS, ISO9660, as well as network file systems, such as Samba and NFS.

274. T2 SDE
T2 is an open source system development environment (or distribution build kit if you are more familiar with that term). T2 allows the creation of custom distributions with bleeding edge technology. Currently, the Linux kernel is normally used - but we are expanding to Hurd, OpenDarwin and OpenBSD; more to come. T2 started as a community driven fork from the ROCK Linux Project with the aim to create a decentralised development and a clean framework for spin-off projects and customised distributions.

275. TFM Linux
TFM Linux is a Linux operating system that can be used for small enterprises, whose administrators are not so experienced in Linux. It all began a long time ago with a Red Hat distribution, whose packages were very low on security, so that less than 5 % of these were kept and the rest was replaced with alternate Red Hat packages which proved to be more stable. That's the way the TFM Linux idea was born. The simplest method at that time was the adaptation of Red Hat distribution to the needs previously specified. So in March 2001 TFM Linux 1.0 was launched. An easy to install operating system, easy to use as server edition or workstation and adapted for the user's needs. All the knowledge gathered during all this time, allowed the observation of the modified Red Hat distribution limits, and, as future plan, it was established that the next version of the distribution will be done starting from zero, for having complete control to what is happening in the distribution and the packages interactions.

276. Thinstation
Thinstation is a modern thin client that does work on its own for basic operations like web browsing, managing removable media and printers, but rely on servers for major applications as well as administration of the clients. The clients may be diskless or boot from local media. Thinstation works as a client using X, ICA, RDP, SSH, NX, telnet, tn5250 and other protocols and works on standard PC hardware.

277. Tiny Core Linux
Tiny Core Linux is a 10 MB graphical Linux desktop. It is based on the Linux 2.6 kernel, BusyBox, Tiny X, Fltk, and Flwm. The core runs entirely in memory and boots very quickly. The user has complete control over which applications and/or additional hardware to have supported, be it for a desktop, a nettop, an appliance or server; selectable from the project's online repository.

278. TinyMe
TinyMe is a Unity Linux-based mini-distribution. It exists to ease installation of Unity Linux on older computers, to provide a minimal installation for developers, and to deliver a fast Linux installation for where only the bare essentials are needed.

279. Toorox
Toorox is a Gentoo-based live DVD which boots into a KDE desktop using KNOPPIX hardware auto-detection and auto-configuration technologies. It is a useful tool for backing up data, browsing the Internet anonymously, or taking a first look at the capabilities of Linux. The live DVD can be installed to a hard disk with the help of a simple graphical installer.

280. Topologilinux
Topologilinux is a Slackware-based distribution designed primarily to be installed inside an existing Windows system. As of version 6.0, it can also be installed as a standalone distribution using the standard Slackware installer. Compared to Slackware, however, Topologilinux is enhanced with GNOME, and other popular applications.

281. Toutou Linux
Toutou Linux is a French variant of Puppy Linux, a minimalist, yet powerful and extremely fast Linux distribution for the desktop. It is especially suitable to Linux beginners. It features the JWM window manager, SeaMonkey as the default Internet browser and a variety of lightweight applications, including some custom configuration utilities. The project also provides extra software packages, converted into French, for free download.

282. Trinity Rescue Kit
Trinity Rescue Kit (TRK) is a bootable Linux distribution aimed specifically at offline operations for Windows and Linux systems such as rescue, repair, password resets and cloning. It has custom tools to easily recover deleted files, clone Windows installations over the network, perform antivirus sweeps with two different antivirus products, reset windows passwords, read and write on NTFS partitions, edit partition layout and much much more. Trinity Rescue Kit is mostly based on Mandriva Linux and heavily adapted start-up scripts.

283. Trisquel GNU/Linux
Trisquel GNU/Linux is a 100% libre Ubuntu-based Linux distribution. Its main purpose is to provide an operating system for varied audience, including home and office users, educational institutions, multimedia workstations, etc. The project is managed by independent developers and is partially funded by donations.

284. trixbox
trixbox (formerly known as Asterisk@Home) is a CentOS-based Linux distribution that enables the home user to quickly set up a VoIP Asterisk PBX. A web GUI makes configuration and operation easy. The CD also includes an xPL (home automation) interface for easy interaction with other devices in the home.

285. Tuquito
Tuquito is a Ubuntu-based distribution and live CD made in Argentina. It features automatic hardware detection, excellent support for scanners, web cams and digital cameras, and compatibility with MS Office file formats. It is designed for beginners and intermediate Linux users.

286. Turbolinux
Turbolinux distributions are designed from the ground-up specifically for enterprise computing. Turbolinux 7 Server was the first-ever to conform to Internationalization standards to help simplify development of applications that require multiple language support - a critical requirement for software distributed globally. Turbolinux 7 Server also supports the Large File Support (LFS) standard for working with applications that manage or handle up to four terabytes of data - a common requirement for infrastructures serving Fortune 500 and larger companies. Such industrial-strength environments provide the basis upon which PowerCockpit and other Turbolinux innovations were created.

287. TurnKey Linux
TurnKey Linux is an Ubuntu-based virtual appliance library that integrates some of the best open-source software into ready-to-use solutions. Each virtual appliance is optimised for ease of use and can be deployed in just a few minutes on bare metal, a virtual machine and in the cloud. The growing list of virtual appliances, each of which is available as a CD image or virtual machine image, include Bugzilla, Django, Drupal, File Server, Joomla, LAMP, Magento, Mantis, MediaWiki, MoinMoin, Moodle, MovableType, MySQL, Openbravo, phpBB, PostgreSQL, ProjectPier, Rails, Revision Control, StatusNet, Apache Tomcat, Torrent Server, Trac, TWiki, vtiger, WordPress, Zimra and others.

288. UberStudent
UberStudent ("uber" meaning "productive" in Latin) is an Ubuntu-based distribution on a DVD designed for learning and teaching academic computing at the higher education and advanced secondary levels. UberStudent comes with software for everyday computing tasks, plus a core set of programs and features designed to teach and make easier the tasks and habits common to high-performing students of all academic disciplines. Lifelong learners, as well as any sort of knowledge worker, will equally benefit. UberStudent is supported by a free Moodle virtual learning environment.

289. Ubuntu
Ubuntu is a complete desktop Linux operating system, freely available with both community and professional support. The Ubuntu community is built on the ideas enshrined in the Ubuntu Manifesto: that software should be available free of charge, that software tools should be usable by people in their local language and despite any disabilities, and that people should have the freedom to customise and alter their software in whatever way they see fit. "Ubuntu" is an ancient African word, meaning "humanity to others". The Ubuntu distribution brings the spirit of Ubuntu to the software world.

290. Ubuntu Privacy Remix
Ubuntu Privacy Remix (UPR) is a modified live DVD based on Ubuntu. Its goal is to provide a completely isolated working environment where private data can be dealt with safely and to protect data against unsolicited access. Networking is intentionally disabled and saving data to mounted volumes is not allowed. The live CD is not installable to hard disk.

291. Ubuntu Rescue Remix
Ubuntu Rescue Remix is a GNU/Linux live system which runs from CD or USB Flash device. It provides the data recovery specialist with a command-line interface environment equipped with some of the best free and open source data recovery and forensics tools available.

292. Ubuntu Studio
Ubuntu Studio is a variant of Ubuntu aimed at the GNU/Linux audio, video and graphic enthusiast as well as professional. The distribution provides a collection of open-source applications available for multimedia creation.

293. UHU-Linux
UHU-Linux is the leading distribution of Linux in Hungary. It is primarily intended for Hungarian users, thus special care is taken to support the Hungarian language as much as possible. Ease of installation and sane default settings both help new users of Linux and make veterans feel comfortable. Usability as the main goal involves having all the cutting-edge yet stable releases of Open Source packages, with dpkg as the package manager. Development is completely open and everyone is invited to join.

294. Ulteo Application System
Ulteo Application System (Ulteo AS) is a Debian/Ubuntu-based Linux distribution created by Gaël Duval, the original founder of Mandrake Linux (now Mandriva Linux) and co-founder of MandrakeSoft (now Mandriva). It is a hybrid, network-oriented and mostly automatic computing system that ships with hundreds of applications and innovative features. The basic version of the Ulteo AS provides a choice of applications for daily use, such as Firefox, Thunderbird,, etc., but can be easily extended with a set of applications from the Ulteo panel. It also provides document and panel content synchronisation capabilities between a local installation of Ulteo AS and Ulteo Open Virtual Desktop.

295. Ultimate Edition
Ultimate Edition, first released in December 2006, is a fork of Ubuntu. The goal of the project is to create a complete, seamlessly integrated, visually stimulating, and easy-to-install operating system. Single-button upgrade is one of several special characteristics of this distribution. Other main features include custom desktop and theme with 3D effects, support for a wide range of networking options, including WiFi and Bluetooth, and integration of many extra applications and package repositories.

296. Unity Linux
The community-oriented Unity Linux is a minimalist distribution and live CD based on Mandriva Linux. The project's main goal is to create a base operating system from which more complete, user-oriented distribution can easily be built - either by other distribution projects or by the users themselves. Unity Linux uses Openbox as the default window manager. Its package management is handled via Smart and RPM 5 which can download and install additional software packages from the project's online repository.

297. Untangle Gateway
Untangle Gateway is a Debian-based network gateway with pluggable modules for network applications like spam blocking, web filtering, anti-virus, anti-spyware, intrusion prevention, VPN, SSL VPN, firewall, and more.

298. Userful Desktop
Userful Desktop is a complete Linux operating system pre-integrated with a suite of public computer management software and Userful's 10-to-1 desktop advantage. With Userful Desktop and sufficient video cards, mice and keyboards, up to ten users can independently browse the Internet, send email and run a wide variety of productivity software all from one computer box. Built on Red Hat's Fedora Core, Userful Desktop is a robust, multi-user desktop computing platform that can be customised to address a wide variety of public computing applications.

299. UTUTO
UTUTO GNU/Linux is a Gentoo-based distribution developed by at the Universidad Nacional de Salta in Argentina. Named after a fidgety local lizard that pokes its nose into every hole, UTUTO is a high-performance desktop system designed to be used by home and office users, developers, organisations and government officials.

300. VectorLinux
Vector Linux is a small, fast, Intel based Linux operating system for PC style computers. The creators of Vector Linux had a single credo: keep it simple, keep it small and let the end user decide what their operating system is going to be. What has evolved from this concept is perhaps the best little Linux operating system available anywhere. For the casual computer user you have a lightening fast desktop with graphical programs to handle your daily activities from web surfing, sending and receiving email, chatting on ICQ or IRC to running an ftp server. The power user will be pleased because all the tools are there to compile their own programs, use the system as a server or perhaps the gateway for their home or office computer network. Administrators will be equally as pleased because the small size and memory requirements of the operating system can be deployed on older machines maybe long forgotten.

301. VENENUX GNU/Linux
VENENUX GNU/Linux is a South American desktop distribution based on Debian GNU/Linux and intended primarily for Spanish-speaking users. It adheres strictly to the principles of free software as defined by the Free Software Foundation.

302. Vine Linux
Vine Linux is a supreme Linux distribution with integrated Japanese environment for desktop PCs and notebooks. Project Vine was founded by six members of the Project Japanese Extension (JPE) in 1998 and has been developing Vine Linux with help of many members and volunteers. Vine Seed, the development version of Vine Linux, is a public software repository, which all developers are welcome to join and contribute to. Out-of-the-box Kanji support is available throughout most applications and Japanese input support is provided by either the FreeWnn (or Wnn6 in the commercial "CR" edition) or the Canna input server.

303. Vinux
Vinux is a remastered flavour of the Ubuntu distribution optimised for the needs of blind and visually impaired users. It provides three screen readers, two full-screen magnifiers, global font-size and colour changing facilities, and out-of-the-box support for USB Braille displays. The Vinux live CD boots into the Orca screen reader which makes it easy to navigate the graphical GNOME desktop using keybindings. For those who prefer to work in a simple text-based console there is the Speakup screen reader as well as YASR, a hybrid screen reader which can be run in either console mode or in a virtual terminal on the GNOME desktop.

304. VLOS
VLOS (Vidalinux Desktop OS) is a powerfull, stable and easy-to-use Linux distribution. The desktop components are based on the best projects of the open source community including the GNOME desktop environment, Firefox browser, Evolution mail and calendar client, Gentoo Linux system and portage package manager. VLOS includes additional multimedia and productivity applications for the home user including media players, browser plugins for Flash, RealPlayer, PDF viewer, media, graphics design and administration tools.

305. VMKnoppix
VMKnoppix is Debian and KNOPPIX-based Linux live CD/DVD featuring a collection of Virtual Machine software, such as Xen, KVM, VirtualBox, QEMU, KQEMU (QEMU with accelerator) and UserMode Linux. The system enables to boot several popular distributions, including CentOS, Debian GNU/Linux and Ubuntu, in a virtual environment.

306. VNLinux
VNLinux consists of two subprojects - vnlinuxCD and VNLS (VNLinux Secure). vnlinuxCD is a Vietnamese Linux live CD based on Mandriva Linux and designed for desktop use. Its default desktop environment is GNOME and it can be installed on hard disk with a simple installation wizard. VNLS is a server oriented distribution based on EnGarde Secure Linux designed for Vietnamese users.

307. VortexBox
VortexBox is a Fedora-based Linux distribution that turns an unused computer into an easy-to-use music server or jukebox. Once VortexBox has been loaded it will automatically rip CDs to FLAC and MP3 files, ID3-tag the files, and download the cover art. VortexBox will then serve the files to network media player. The file can also be streamed to a Windows or Mac OS X system.

308. Vyatta
Vyatta software is a complete, ready-to-use, Debian-based distribution that is designed to transform standard x86 hardware into an enterprise-class router / firewall. Vyatta software includes support for commonly used network interfaces, and industry-standard routing protocols and management protocols. Unlike previous open-source routing projects, all these features are configurable via a single command-line interface (CLI) or web-based graphical user interface (GUI). Vyatta software is available as a free Community Edition as well as tiered Software Subscriptions that include maintenance, upgrades and support.

309. wattOS
wattOS is a fast desktop Linux distribution based on Ubuntu. Using the lightweight Openbox window manager as its default user interface, the distribution strives to be as energy-efficient as possible so that it can be used on low-specification and recycled computers.

310. Webconverger
Webconverger is a live, Debian-based web kiosk. It is designed for deployments in places like offices or Internet cafés where only web applications are used.

311. Wifislax
Wifislax is a Slackware-based live CD containing a variety of security and forensics tools. The distribution's main claim to fame is the integration of various unofficial network drivers into the Linux kernel, thus providing out-of-the-box support for a large number of wired and wireless network cards.

312. xPUD
xPUD is an Ubuntu-based Linux distribution and live CD/USB image consisting mainly of a web browser and a media player, with a simple user interface on top. The goal of the developers is to create an operating system which is extremely lightweight and fast-booting, includes applications for daily use, and has an intuitive, easy-to-use desktop interface.

313. Xubuntu
Xubuntu is a Linux distribution based on Ubuntu. Unlike its parent, however, Xubuntu uses the light-weight Xfce desktop environment and is optimised for lower-end machines. The distribution includes only GTK+ applications where possible.

314. Yellow Dog Linux
Yellow Dog Linux is an open source Linux operating system for home, office, server, and cluster users. Built upon the Red Hat/CentOS core, Terra Soft and now Fixstars (which acquired Terra Soft in 2008) has since the spring of 1999 developed and maintained Yellow Dog Linux for the Power architecture family of processors. The distribution combines a graphical installer with support for a wide range of Power hardware, leading-edge kernels, stable, functional compilers for code development, and servers for web, database, email, and network services. More than 2,000 packages are included on the install DVD.

315. Ylmf OS
Ylmf OS is an independent Chinese Linux distribution with the GNOME desktop tweaked to resemble Microsoft Windows XP. In the beginning it was based on Ubuntu, but starting from version 4.0 it adopted custom package management (called YPK) and system installer, though the underlying live medium is still built using Ubuntu's Casper tool.

316. Yoper Linux
Yoper is a multipurpose high performance operating system which has been carefully optimised for PC's with either 686 or higher processor types. The binaries that come with Yoper have been built from scratch using the original sources combined with the best features of major distros, measuring up to the demanding proliferation of network communications and more intensive digital multimedia, graphics and audio capabilities which are ushering in a new era of business productivity enabled by a new generation of sophisticated microprocessors, and business application tools.

317. Zencafe GNU/Linux
Zencafe GNU/Linux is a desktop Linux distribution designed specifically for public Internet cafés. Based on Slackware and Zenwalk Linux, it includes auto-recovery features, Internet café billing and management software, and other graphical system administration tools. Zencafe's default edition uses Xfce as the main desktop, while its "Lite" edition, designed for older or less powerful computers, installs the IceWM window manager.

318. Zentyal
Zentyal (formerly eBox Platform) is a unified network server that offers easy and efficient computer network administration for small and medium-size businesses. It can act as a gateway, an infrastructure manager, a unified threat manager, an office server, a unified communication server or a combination of them. These functionalities are tightly integrated, automating most tasks, avoiding mistakes and saving time for system administrators. Zentyal is released under the GNU General Public License (GPL) and runs on top of Ubuntu.

319. Zenwalk Linux
Zenwalk Linux (formerly Minislack) is a Slackware-based GNU/Linux operating system with a goal of being slim and fast by using only one application per task and with focus on graphical desktop and multimedia usage. Zenwalk features the latest Linux technology along with a complete programming environment and libraries to provide an ideal platform for application programmers. Zenwalk's modular approach also provides a simple way to convert Zenwalk Linux into a finely-tuned modern server (e.g. LAMP, messaging, file sharing).

320. Zeroshell
Zeroshell is a small Linux distribution for servers and embedded devices with the aim to provide network services. It is available in the form of live CD or compact Flash image and it can be configured using a web browser. The main features of Zeroshell include: load balancing and failover of multiple Internet connections, UMTS/HSDPA connections by using 3G modems, RADIUS server for providing secure authentication and automatic management of encryption keys to wireless networks, captive portal to support web login, and many others.

321. ZevenOS
ZevenOS is an Ubuntu-based GNU/Linux distribution with focus on providing a fast and easy-to-use system with BeOS-like user interface and support for older hardware. The distribution is built on top of a recent Linux kernel and includes a large number of popular open-source software applications for office use, multimedia playback and software development. ZevenOS also ships with MAGI, a tool for starting applications and managing the system.

322. Zorin OS
Zorin OS is an Ubuntu-based Linux distribution designed especially for newcomers to Linux. It has a Windows-like graphical user interface and many programs similar to those found in Windows. Zorin OS also comes with an application that lets users run many Windows programs. The distribution's ultimate goal is to provide a Linux alternative to Windows and let Windows users enjoy all the features of Linux without complications.

fuente: distrowatch