List of all special purpose Linux distributions

All the Linux distributions listed in this page are specialized for a particular task. Most of them are small, since limiting the functionally can also limit the size. However there are some Special Purpose distributions listed here that are not small.

1. 4MLinux
   http://4mlinux.com/
   http://sourceforge.net/projects/linux4m/
   4MLinux is a miniature Linux distribution focusing on four capabilities: Maintenance (system rescue live CD), Multimedia (supports most image, audio and video formats), Miniserver (DNS, FTP, HTTP, MySQL, NFS, Proxy, SMTP, SSH, and Telnet), and Mystery (includes a collection of classic Linux games). 4M joined the list with the release of 4MLinux-3.0-rescue-edition, dated September 16, 2011. 4MLinux 12.0 Allinone Edition was released May 9, 2015. 4MLinux 27.2 was released February 2, 2019. 4MLinux 29.0 was released June 2, 2019.
2. 64 Studio
   http://64studio.com/
   64 Studio is developing a collection of software for digital content creation on x86_64 hardware (that's AMD's 64-bit CPUs and Intel's EM64T chips). It's based on the pure 64 port of Debian GNU/Linux, but with a specialized package selection and lots of other customizations. 64 Studio 1.1.0 was released January 11, 2007. Development release 1.4.0 was announced May 22, 2007. 64 Studio 2.0 'Electric' was released July 27, 2007. 64 Studio 2.1 'A Minha Menina' was released June 9, 2008.
3. ABC GNU/Linux
   http://www.ehu.es/AC/ABC.htm
   ABC GNU/Linux is an Ubuntu based distribution for building Beowulf clusters. It can be initated from a live DVD or from a disk installation and can be used to automatically configure other machines in the cluster.
4. Aboriginal Linux
   http://landley.net/code/firmware/
   http://landley.net/aboriginal/
   Aboriginal Linux (formerly Firmware Linux) is a set of tools to build custom virtual machines. It lets you boot virtual PowerPC, ARM, MIPS and other exotic systems on your x86 laptop (using an emulator such as QEMU). Development on Firmware Linux began in August 2006. Aboriginal Linux 1.0 was released September 5, 2010. Aboriginal Linux 1.1.0 was released October 2, 2011.
5. Adriane Knoppix
   http://www.knopper.net/knoppix-adriane/index-en.html
   Adriane Knoppix aims to be an easy-to-use desktop system, which can be used entirely without vision oriented output devices, suitable for blind or visually impaired people with few or no computer skills. The live CD can be installed to a hard drive and provides access to standard Internet services like email, www, chat, and using mobile phone extension services like SMS and MMS (over the user's own mobile phone via bluetooth). Klaus Knopper, creator of Knoppix, and his visually impaired wife Adriane are the principle developers. ADRIANE is also an acronym for Audio Desktop Reference Implementation and Networking Environment. ADRIANE 1.2 was released November 17, 2009. See the KNOPPIX entry (under 'Also Well-Known' for more information.
6. aLinux
   http://alinux.tv/
   aLinux Support Forum
   aLinux is a Professional Linux Operating System (700MB) designed for ease of use and sports a visually stunning Graphical User Interface, while maintaining a level of sophistication that experienced linux users can appreciate. Formerly known as Peanut Linux when v12.1 was released February 23, 2005. The name was changed to aLinux and version 12.2 was released March 24, 2005. Version 12.8 was released July 31, 2006. aLinux 14.0 was released June 1, 2010. aLinux 15.0 was released February 22, 2013.
7. Android-x86
   http://www.android-x86.org/
   Android-x86 is a project to port Android to x86 platforms. Android-x86 4.4-RC2 (KitKat-x86) was released May 20, 2014. Android-x86 4.4-r5 (KitKat-x86) was released February 6, 2016. Android-x86 6.0-r3 (Marshmallow-x86) was released April 24, 2017. Android-x86 7.1-r2 (Nougat-x86) was released May 2, 2018. Android-x86 8.1-rc1 (Oreo-x86) was released June 18, 2018.
8. Apertis
   https://wiki.apertis.org/Main_Page
   Apertis is an open source GNU/Linux-based platform for infotainment in automotive vehicles. It uses GNOME libraries and components. It was in active development, with a 3-month release cycle and daily builds, when this entry was added, September 8, 2016.
9. APODIO
   http://apodio.org/ http://www.apo33.org/apodio/doku.php
   APODIO is a Mandriva based distribution containing audio, text-friendly, graphic and video tools. It can be used as a liveCD or be installed on a partition of your hard disk. Version 4.3.6 was released May 11, 2006. Version 4.3.9 test was released July 28, 2006. APODIO 10.3 was released May 6, 2015.
10. ArcheOS
    http://www.arc-team.com/
    ArcheOS is short for Archeological Operating System. It is a live CD GNU/Linux distribution built for archaeological aims and based on PCLinuxOS. ArcheOS is developed following the Oparc project guidelines and it's released under the General Public License (GPL). ArcheOS Akhenaton v1.0.1 was the current version when this entry was added, January 9, 2006. ArcheOS v 1.1.6 was released June 27, 2006. ArcheOS v 2.0.0 was released February 19, 2008. ArcheOS v 3.0.0 was released March 12, 2009.
11. arkOS
    https://arkos.io/
    arkOS is a lightweight system based on Arch Linux that runs on a Raspberry Pi. It provides a full software stack to manage your self-hosting experience using the Genesis configuration tool. arkOS 0.8.0 'Galileo' was released October 15, 2016. An end to development was announced April 21, 2017.
12. ArtistX
    http://www.artistx.org/
    ArtistX is a live DVD which turns a computer into a full multimedia production studio. Early versions were based on Debian GNU/Linux, later versions are Ubuntu based. It contains nearly all the available free audio, 2D and 3D graphics, and video software for the GNU/Linux computing platform. It doesn't need to be installed, and boots directly into a running system without touching hard drives. The files produced with ArtistX can be easily stored on USB devices or CD/DVD medium while it is running. ArtistX joined the list with its 0.3 release, April 2, 2007. ArtistX 1.1 was released July 6, 2011. ArtistX 1.5 was released September 16, 2013.
13. Asterisk Live! CD
    Asterisk Live! CF
    http://www.automated.it/asterisk/
    http://www.automated.it/asterisk/asterisk-cf.htm
    Asterisk PBX is Linux based, open source PBX software that provides voice over IP in three protocols and is interoperable with most standards-based telephony equipment using comparatively inexpensive hardware. If you want to play around with Asterisk check out this distribution which is available as a Live CD and a Compact Flash install. The Getting Started With Asterisk guide provides an excellent starting point.
14. AsteriskNOW
    http://www.asterisknow.org/
    AsteriskNOW is an open source Software Appliance; a customized Linux distribution that includes Asterisk (an open source telephony engine and tool kit), the AsteriskGUI, and all other software needed for an Asterisk system. AsteriskNOW aims to be easy to install, flexible, functional and featurful. AsteriskNOW joined the list with the release of v1.5.0 (based on CentOS 5.3), dated April 1, 2009. AsteriskNOW 3.0 was released March 20, 2013.
15. AsteroidOS
    http://asteroidos.org/
    AsteroidOS is an open-source operating system for smartwatches. A developer preview was available when this entry was added, June 28, 2016. Alpha 1.0 was available in January 2017 and supported four types of smartwatches. AsteroidOS 1.0 was released May 15, 2018.
16. Audiophile Linux
    https://www.ap-linux.com/
    Audiophile (AP) Linux aims to be the best digital music player. Based on Arch Linux, Audiophile uses a custom real time kernel for improved audio processing. AP-Linux V4 was released April 16, 2017.
17. AV Linux
    http://www.bandshed.net/avlinux/
    AV Linux is an Audio/Graphics/Video workstation based on Debian Testing and Xfce. AV Linux 3.0 was a full-featured LiveDVD. It was created using the Debian GNU/Linux Testing branch and Remastersys. Once installed AV Linux transforms the users computer into a full-blown Audio/Video Workstation. Its program selection covers most common everyday computer tasks, including a full complement of the best F/OSS Multimedia Applications available allowing users to enjoy Multitrack Audio Recording and Mixing, Video Capturing, Editing and Converting, DVD Authoring and Creation, iPod Tools and much more. AV Linux also contains Hard Drive utilities making it an excellent troubleshooting and rescue solution. AV Linux joined the list with the release of 3.0R1 (revision 1) dated January 15, 2010. AV Linux 6.0 'The Now' was released August 16, 2012, with an announcement that no further releases were planned. As it happens, AV Linux 6.0.1 was released June 4, 2013. AV Linux 2016 was released March 24, 2016. AVL 2019.4.10 was released April 3, 2019.
18. Bedrock Linux
    http://bedrocklinux.org/
    Bedrock Linux is a Linux distribution created with the aim of making most of the (often seemingly mutually-exclusive) benefits of various other Linux distributions available simultaneously and transparently. If one would like a rock-solid stable base (for example, from Debian or a RHEL clone) yet still have easy access to cutting-edge packages (from, say, Arch Linux), automate compiling packages with Gentoo's portage, and ensure that software aimed only for the ever popular Ubuntu will run smoothly - all at the same time, in the same distribution - Bedrock Linux will provide a means to achieve this. Bedrock combines the Linux kernel with the Busybox userspace for a lightweight base system. The first alpha version was released August 3, 2012. Bedrock 0.7.3 Poki was released April 14, 2019. Bedrock 0.7.7 was released August 27, 2019.
19. BG-Rescue Linux
    http://www.giannone.eu/rescue/current/
    http://freshmeat.net/projects/bgrescue/
    BG-Rescue Linux is a Busybox 0.60.5 and uClibc 0.9.19 based rescue system with kernel 2.4.21. It is loaded either from two floppy disks or from one 2.8MB El Torito CD. The system runs entirely in RAM. It joins the list at version 0.1.2, released July 12, 2003. Version 0.4.1 was released March 2, 2005. Version 0.9.1 was released April 2, 2008.
20. Bio-Linux
    http://envgen.nox.ac.uk/tools/bio-linux
    Bio-Linux is based on the Debian GNU/Linux distribution. Bioinformatics-related customisations include the inclusion of a large number of bioinformatics programs and programming libraries, the addition of graphical menus for much of the bioinformatics software, and links from the desktop to key documentation and applications. The system also includes a comprehensive, categorised and searchable documentation system for bioinformatics software. The Bio-Linux project began in 2002 and was designed as a mechanism to deploy bioinformatics and data management software on a powerful computing platform to researchers funded by the NERC Environmental Genomics Thematic Programme. Bio-Linux version 1.0 was released in 2002. Bio-Linux 7.0, based on Ubuntu 12.04 LTS, was released November 22, 2012. Bio-Linux 8.0.5 was released January 9, 2015.
21. BitKey
    https://bitkey.io/
    BitKey is a Debian stable based distribution aimed at Bitcoin users. It is meant to be run from USB drive or CD/DVD where it will run in RAM. It has everything you need to perform highly secure air-gapped Bitcoin transactions. Under the hood it contains a swiss army knife of handy Bitcoin tools that support a wide range of usage models, including a few very secure ones which would otherwise be difficult to perform. BitKey is a side project by the core developers of TurnKey GNU/Linux. The initial release, version 14.1.0, was dated January 20, 2017. BitKey 14.2.0 was released May 22, 2017.
22. Byzantium
    http://project-byzantium.org/
    Byzantium is a live Linux distribution that delivers easy-to-use, secure, and robust mesh networking capabilities which can augment or replace the current telecommunications infrastructure in the event that it is knocked offline or rendered untrustworthy. Project Byzantium is a working group of HacDC. Byzantium was added to the list with the 0.3 alpha "Beach Cat" release, dated March 27, 2013.
23. CAELinux
    http://www.caelinux.com/CMS/
    CAELinux is a live DVD distribution for Computer Aided Engineering. Early versions were based on PCLinuxOS, but later changed to Xubuntu. CAELinux incorporates many open source applications to create an open engineering development workstation with CAD, CAM, CAE / FEA / CFD, electronic design, and 3D printing. CAElinux 2008 was released April 18, 2008. CAELinux 2018 (based on Xubuntu 16.04) was released January 4, 2019.
24. CeroWrt
    http://www.bufferbloat.net/
    CeroWrt is a project aimed at resolving endemic problems in home networking, and to push the state of the art of edge networks and routers forward. Projects include tighter integration with DNSSEC, wireless mesh networking (Wisp6), measurements of networking and censorship issues (BISMark), among others, notably reducing bufferbloat in both the wired and wireless components of the stack. CeroWrt RC5 (beta) was released August 18, 2011. CeroWrt 1.0-RC6 (beta 2) was released September 20, 2011. CeroWrt 3.10.50-1 was released July 28, 2014.
25. Chromium OS
    http://www.chromium.org/chromium-os
    Chromium OS is an open-source project that aims to build an operating system that provides a fast, simple, and more secure computing experience for people who spend most of their time on the web. All apps are web apps. The entire experience takes place within the browser and there are no conventional desktop applications. Each app is contained within a security sandbox. The source was first released November 19, 2009.
26. Clear Linux
    https://clearlinux.org/
    Intel's Clear Linux Project is a distribution built for various Cloud use cases. It aims to be a showcase of the best of Intel Architecture technology and performance, from low-level kernel features to complex applications that span across the entire OS stack. An unversioned release of Clear Linux was dated January 20, 2017.
27. Clonezilla Live
    http://www.clonezilla.org/
    http://sourceforge.net/projects/clonezilla/
    The Free Software Lab at the NCHC has combined Debian Live with Clonezilla to produce "Clonezilla Live," a live CD that can be used to easily clone individual machines. The primary benefit of Clonezilla Live is that it eliminates the need to set up a DRBL server ahead of time and the need for the computer being cloned to boot from a network. Clonezilla Live can be used to clone individual computers using a CD/DVD or USB flash drive. Though the image size is limited by the boot media's storage capacity, this problem can be eliminated by using a network filesystem such as sshfs or samba. Clonezilla live 1.2.1-53 (stable) was released April 7, 2009. Clonezilla live 2.6.2-15 (stable) was released July 12, 2019.
28. CloudLinux OS
    https://www.cloudlinux.com/
    CloudLinux OS is designed for shared hosting providers. It isolates each customer into a separate "Lightweight Virtualized Environment" (LVE), which partitions, allocates, and limits server resources, like memory, CPU, and connections, for each tenant.
29. Condres OS
    https://condresos.codelinsoft.it/
    Condres OS aims to be a modern, intuitive operating system for the cloud generation of computing; easy to use, easily accessible, and beautifully designed. It also incorporates software to minimize security risks as much as possible. It is a rolling release, based on Arch Linux. Condres OS 2019.03 was released March 1, 2019.
30. Container Linux
    https://coreos.com/
    Formerly known CoreOS, Container Linux is designed to be a modern, minimal base to build a platform for massive server deployments. It provides automated tools for security patches and clustering. CoreOS joined the list with the release of v268.1.0, dated March 27, 2014. The company CoreOS changed the name of the distribution to Container Linux in December 2016, when Container Linux 1248.1.0 was the current version. Container Linux 1967.4.0 was released January 29, 2019.
31. Cumulus Linux
    https://cumulusnetworks.com/
    Cumulus Linux allows you to affordably build and efficiently operate your network like the world’s largest data center operators — unlocking vertical network stacks. With Cumulus Linux, customers can run their data center networks the way Google and Facebook have done for years, highly automated, without all the development time or expensive, specialized hardware. Cumulus Linux 3.3 was released May 2, 2017. Cumulus Linux 3.6 was released April 30, 2018.
32. Damn Vulnerable Linux
    http://www.damnvulnerablelinux.org/
    http://www.computerdefense.org/dvl/
    Damn Vulnerable Linux (DVL) is a live CD packed with broken, ill-configured, outdated, and exploitable software that makes it vulnerable to attacks. DVL isn't built to run on your desktop - it's a learning tool for security students. DVL is designed to be as vulnerable as possible, to teach topics such as reverse code engineering, buffer overflows, shellcode development, Web exploitation, and SQL injection. DVL was added to the list July 19, 2010.
33. Darik's Boot And Nuke
    http://www.dban.org/
    Darik's Boot And Nuke (DBAN) is a self-contained boot disk that automatically deletes the contents of any hard disk that it can detect. This method can help prevent identity theft before recycling a computer. It is also a solution commonly used to remove viruses and spyware from Microsoft Windows installations. DBAN prevents all known techniques of hard disk forensic analysis. It does not provide users with a proof of erasure, such as an audit-ready erasure report. DBAN joined the list with the release of v2.2.7, dated November 1, 2012.
34. DebianDog
    https://debiandog.github.io/doglinux/
    DebianDog is a very small Debian Live CD shaped to look and act like Puppy Linux. Debian structure and Debian behaviour are untouched and Debian documentation is 100% valid for DebianDog. You have access to all debian repositories using apt-get or synaptic. There are several Dogs such as DebianDog-Jessie and XenialDog. DebianDog was added to the list February 28, 2017.
35. Debian-Med
    http://www.debian.org/devel/debian-med/
    Debian-Med is an internal Debian project to support tasks of people in medical care. The goal of Debian-Med is to build a a complete system for all tasks in medical care, using only free software. Version 5.0 was released February 15, 2009.
36. Distro Astro
    http://www.distroastro.org/
    Distro Astro aims to create a Linux distribution for astronomers and astronomy enthusiasts that provides the best experience for both professional and amateur astronomers. Distro Astro is based on Ubuntu and features the MATE desktop. Version 2.0 Pallas was released November 20, 2013. Distro Astro 3.0 Juno was released November 9, 2014. Distro Astro 3.0.1 was released January 6, 2015.
37. DNA Linux
    http://www.dnalinux.com/
    DNA Linux is a live Linux distribution with bioinformatics software preloaded. It is for people who find it hard to install EMBOSS, Primer3, BLAST, and other bioinformatics software or who want to have a test system for class or demonstration purposes. The first public version was 0.13, released January 31, 2004. Version 0.592, based on SLAX 5.10, was released April 18, 2006.
38. Dream Studio
    http://www.dickmacinnis.com/dreamstudio/
    http://dream.dickmacinnis.com/forum/
    Dream Studio is aimed at multimedia creation. It comes with a variety of applications to create graphics, videos, music and websites. The live DVD can be installed to hard-drive or USB. Ubuntu-based Dream Studio 11.10 was released February 24, 2012. Dream Studio 12.04.3 was released June 27, 2013.
39. EasyOS
    https://easyos.org/
    EasyOS is an experimental, container friendly distribution, by Puppy Linux creator Barry Kauler. It is built from source with the Woof build system. EasyOS was created in January 2017. EasyOS 1.0.8 was released February 20, 2019. Easy Buster 2.1 was released August 25, 2019.
40. Easy Peasy
    http://www.geteasypeasy.com/
    Easy Peasy, formerly Ubuntu Eee, is an Ubuntu based distribution for netbooks and the Asus Eee PC. It uses the Netbook Remix interface, favoring the best software available, which may not be open source. Easy Peasy was added to the list February 4, 2009. Easy Peasy 1.1 was released April 22, 2009. Easypeasy 1.5 was released September 8, 2009. EasyPeasy 1.6 was released April 26, 2010.
41. EeeDora
    http://fedoraproject.org/wiki/EeePc
    http://code.google.com/p/eeedora/
    EeeDora is a Fedora based distribution for the Asus eeePC. The current version was 2008-01-25_12h58m (spun from Fedora 8) when the entry was added; January 29, 2008.
42. eeeXubuntu
    http://wiki.eeeuser.com/ubuntu:eeexubuntu:home
    eeeXubuntu is a custom version of the Xubuntu 7.10 Live CD for the Eee PC. It comes with fully-integrated hardware support, including native wireless drivers, functioning Ethernet support, tweaks for low-resolution desktop environments, and other miscellaneous fixes. Wherever possible, these changes are incorporated using custom .deb packages rather than spewing assorted files all over post-install. A broader goal of this project is to assist the Ubuntu community in supporting the eeePC hardware, with an eye towards other Dynabook-like form factors like Everex's Cloudbook and the OLPC XO-1. This entry was added to the list June 26, 2008, when the current version was release 3.
43. Element
    http://www.elementmypc.com/
    Element is an Ubuntu-based operating system for Home Theater or Media Center Personal Computers designed to be connected to your HDTV for a digital media and internet experience within the comforts of your own living room or entertainment area. Element comes stacked with the software you need to manage your music, videos, photos, and internet media. Also included are a variety of applications that provide many of the same functions as your desktop PC, from web browsing to instant messaging and playing games. Element 1.0 was released February 16, 2010. Element 1.4 was released September 1, 2010.
44. ELKS
    http://elks.sourceforge.net/
    git repo
    ELKS: The Embeddable Linux Kernel Subsystem. ELKS 0.1.0-pre4 was released March 4, 2002. ELKS-0.1.3-pre1 was released July 13, 2003. After a period of inactivity ELKS development started up again in early 2012. ELKS-0.1.4 was released February 19, 2012.
45. eMoviX
    http://sourceforge.net/projects/fedoramissing/files/Fedora/Missing_Packages/emovix/
    http://kde-apps.org/content/show.php?content=147066
    eMoviX is a tiny Linux CD distribution containing all the software to boot from a CD and play every video file localized in the CD root. Supported formats are all formats supported by MPlayer, most noticeably DivX & XviD but more in general most AVI, MPEG, QuickTime, WMV, ASF, FLI and a few others. eMoviX 0.9.0-1 was released November 24, 2011.
46. Elive
    http://www.elivecd.org/
    Elive is a live CD based on Debian and featuring the Enlightenment window manager. Elive also supports a hard disk install. Version 0.4.2 was released March 4, 2006. Elive 1.0 was released July 5, 2007. Elive stable "Topaz" 2.0 was released March 3, 2010. Elive stable 3.0.4 was released April 28, 2019.
47. Excelixis
    http://excelixis.wordpress.com/excelixis/
    Excelixis is a derivative of Xubuntu, which comes with several development tools and environments (such as Eclipse, NetBeans, Lazarus, Apache web server, MySQL) pre-installed and some applications (screenlets, cairo-dock) to make it more appealing to the eye. The initial release was based on Xubuntu 8.04.
48. Exherbo
    http://www.exherbo.org/
    Exherbo is a distribution designed for people who know what they're doing with Linux. It is inspired in many places by Gentoo -- in particular, it supports flexible source-based installation with up-front configuration. It uses the Paludis package manager with a custom built EAPI. Exherbo is a place for developers to experiment. Added to the list May 21, 2008.
49. FAN
    http://fannagioscd.sourceforge.net/drupal/
    FAN (Fully Automated Nagios) aims to provide a CD based on CentOS in order to simplify installation of Nagios and other Nagios tools. Tools installed by FAN are: Linux, MySQL, Nagios, Nagios Plugins, NaReTo, NagVis, Centreon, Net-SNMP and NDOUtils. FAN was added to the list with the release of version 0.3 on May 27, 2008.
50. Fatdog64
    http://distro.ibiblio.org/fatdog/web/
    Fatdog64 Linux is a small yet versatile 64-bit multi-user Linux distribution. Originally created as a "fatter" (=more built-in applications) derivative of Puppy Linux, Fatdog has grown to become an independent, mature 64-bit Linux distribution while still keeping true to Puppy Linux spirit: small, fast and efficient. The original release of Fatdog64 was April 12, 2008. Fatdog64-630 was released February 11, 2014. Fatdog64-710 was released December 4, 2016. Fatdog64 720 was released December 20, 2017. Fatdog64-801 was released May 4, 2019.
51. Fedora Jam
    http://spins.fedoraproject.org/jam-kde/
    Fedora Jam is for audio enthusiasts and musicians who want to create, edit and produce audio and music on Linux. It comes with Jack, ALSA and Pulseaudio by default including a suite of programs to tailor your studio. This Fedora spin is compatible with Fedora repositories. Version 19 was the current version when this entry was added, July 10, 2013. Fedora Jam 20 was released December 27, 2013.
52. FemtoLinux
    http://femtolinux.com/
    FemtoLinux is optimized for real-time embedded systems. Its design goal is a low system call and interrupt-to-application latency and overhead, achieved by running critical Linux applications in kernel mode. As of July 2010 FemtoLinux was available for ARM, with MIPS and PowerPC in the works.
53. Freedombone
    https://freedombone.net/
    Freedombone is a Debian-based home server system which enables you to self-host email, chat, VoIP, web sites, file synchronisation, wikis, blogs, social networks, media hosting, backups, VPN, and more, all from your place of residence (not a data center). You can run Freedombone on an old laptop or single board computer. Freedombone got its start in 2013. Freedombone 4.0, based on Debian 10 "buster", was released August 5, 2019.
54. FreePBX
    https://www.freepbx.org/
    FreePBX is a web-based GUI that controls and manages Asterisk (PBX), a communication server. FreePBX can be installed manually or as part of the pre-configured FreePBX distribution that includes the system OS, Asterisk, FreePBX GUI and assorted dependencies. Version 13 was current when this entry was added, March 13, 2017.
55. GalliumOS
    https://galliumos.org/
    wiki
    GalliumOS has been carefully optimized for performance and compatibility on Chromebooks and Chromeboxes. The project aims to outperform ChromeOS on the same hardware, while delivering a full Linux environment. GalliumOS 1.0 Beta 1 was released November 11, 2015. GalliumOS 2.1 was released February 28, 2017.
56. Gargoyle
    http://www.gargoyle-router.com/
    Gargoyle is a free firmware upgrade for many widely available routers such as the WRT54GL and the original La Fonera. Gargoyle 1.3.8 was released November 23, 2010. Gargoyle 1.3.11 was released February 28, 2011.
57. GeeXboX
    http://www.geexbox.org/
    http://freshmeat.net/projects/geexbox/
    GeeXboX is a distribution that turns a desktop computer into a media center. It can run from a live CD, USB, or SD/MMC card. Hard disk installation is also supported. GeeXboX sources are heavily customizable. The distribution comes with its complete cross-compilation framework that allows you to compile it for multiple architectures, selecting the packages you want to be integrated. The project was founded in 2002, with the initial public release of version 0.90-1 on May 17, 2003. GeeXboX 3.0 was released September 18, 2012. GeeXboX 3.1 was released November 1, 2013.
58. GentooX
    http://gentoox.shallax.com/
    GentooX is Gentoo for the XBox. Gentoox Pro v3.0, Gentoox Home v5.0, Gentoox Sparke v2.0, Gentoox Resctoox v4.0 were all released July 4, 2006. Resctoox v5.1 was released August 1, 2006. Gentoox Pro v4.1 was released August 21, 2006. Gentoox Home v6.1 was released August 23, 2006. Home edition was upgraded to v7.1 and Pro to v5.1 January 28, 2010.
59. gittup
    http://gittup.org/gittup/
    gittup is most of a Linux distribution in git, built with tup. gittup was added to the list October 11, 2016.
60. GNU Guix
    http://www.gnu.org/software/guix/
    https://savannah.gnu.org/projects/guix/
    GNU Guix is a purely functional package manager, and associated free software distribution, for the GNU system. It's based on the Nix package manager. In addition to standard package management features, Guix supports transactional upgrades and roll-backs, unprivileged package management, per-user profiles, and garbage collection. A user-land free software distribution for GNU/Linux comes as part of GuixSD. The first alpha release was dated November 22, 2012. GNU Guix and GuixSD 0.16.0 were released December 6, 2018. Guix 1.0.1 was released May 19, 2019.
61. GNU Radio Live SDR Environment
    http://gnuradio.org/redmine/projects/gnuradio/wiki/GNURadioLiveDVD
    The GNU Radio Live SDR Environment, produced by Corgan Labs, is a bootable Ubuntu Linux DVD with GNU Radio and third party software pre-installed. It is designed for quick and easy testing and experimentation with GNU Radio without having to make any permanent modifications to a PC or laptop. Version 3.7.3 was released March 18, 2014.
62. GoboLinux
    http://www.gobolinux.org/
    GoboLinux is an alternative Linux distribution that redefines the entire filesystem hierarchy. Package management is performed through the directory layout itself by storing each program in its own /Programs/[AppName]/[Version] directory. GoboLinux joins the list at version 007, released on October 25, 2003. GoboLinux 013 was released November 3, 2006. GoboLinux 014 was released January 1, 2008. GoboLinux 014.01 was released April 2, 2008. Scripts 2.10.2 and Compile 1.13.3 were released April 27, 2010. GoboLinux 015 was released May 8, 2014. GoboLinux 016.01 was released April 4, 2017.
63. GParted LiveCD
    http://gparted.org/
    http://gparted.sourceforge.net/
    The GParted Live CD puts the power and simplicity of GParted on a business card sized Live CD. The CD aims to be fast, small in size, and use minimal resources to get that disk partitioned the way you want it. GParted LiveCD was originally based on Slackware Linux and Fluxbox window manager. Later versions use Debian unstable as a base. Version 0.1 was released January 12, 2006. GParted Live 0.33.0 was released December 15, 2018. GParted Live 1.0.0-1 was released May 30, 2019.
64. io GNU/Linux
    http://io.gnu.linux.free.fr/
    http://mk.biniou.net/iognulinux.html
    http://sourceforge.net/projects/io-gnu-linux/
    io GNU/Linux is a live system that turns almost any computer into a professional multimedia workstation. It includes a real-time enabled kernel and a great collection of free software for all uses (sound, video, graphics, internet and more). It's based on Debian SID (unstable) and built with the Debian Live tools. io 2014.1 was released January 11, 2014. io GNU/Linux 2019.01 was released March 1, 2019.
65. Jolicloud
    http://www.jolicloud.com/
    Jolicloud is an Internet operating system for the netbook. It combines the two driving forces of the modern computing industry: the open source and the open web. Jolicloud transforms your netbook into a sophisticated web device that taps into the cloud to expand your computing possibilities. Jolicloud joined the list with the second alpha version, which was released June 26, 2009. Jolicloud Pre-Final was released March 29, 2010. Jolicloud 1.0 was announced July 9, 2010. Jolicloud 1.1 was released December 7, 2010. Jolicloud 1.1.1 supports older hardware, released February 22, 2011. With version 1.2 (released March 9, 2011) the project has renamed the system "Joli OS" which includes the "Jolicloud online desktop".
66. KDE Neon
    https://neon.kde.org/
    KDE Neon provides the latest KDE software on a solid Ubuntu base. Suitable for KDE developers and early adopters. The first images were released in January 2016. KDE Neon 5.8 was released (with Plasma 5.8) October 4, 2016. Ubuntu 18.04-based Neon was released September 26, 2018. KDE neon 5.16 (with Plasma 5.16) was released June 11, 2019.
67. Keysoft
    https://keysoft-technology-productions.com/en/
    Keysoft is based on openSUSE and designed for blind users. It comes with a screenreader, Orca and Braille display drivers, and BrlTTY preinstalled. Keysoft is primarily a German distribution, though multi-language support is available.
68. Korora
    http://kororaproject.org/
    http://www.kororaa.org/
    The Korora Project started out as Kororaa Linux (note the extra 'a'). In the beginning (March 2006) Kororaa was a way of installing Gentoo Linux easily and quickly. A live CD showcasing Xgl technology was released March 8, 2006. Kororaa Xgl Live CD 0.2 was released April 6, 2006. Kororaa was on hiatus for some time, but an installable Live DVD x86_64 beta for Kororaa 14 (derived from Fedora 14, with KDE) was released December 23, 2010. Kororaa 14 (Nemo) was released May 31, 2011. The name change was announced February 14, 2013. Korora 25 (Gurgle) was released December 7, 2016. Korora 26 (Bloat) was released September 16, 2017. As of May 2, 2018 there are no planned updates for Korora and the distribution is on hiatus. A community edition of Korora 28 is available and Korora 29 is in developement, as of November 3, 2018.
69. Kuki Linux
    http://www.kuki.me/
    Kuki Linux is a lightweight Ubuntu-based Linux distribution founded by João Ferro (leak), built to be a replacement for the Linpus Lite distribution on the Acer Aspire One. Kuki should work on other Intel Atom powered netbooks. It uses XFCE 4.6 as a window manager and features lightweight software and all the fixes to allow the Acer Aspire One to work as well as possible. The Kuki project was founded on October 21, 2008. Development on v2.9 was ongoing as of January 23, 2010.
70. KXStudio
    http://kxstudio.linuxaudio.org/
    KXStudio is an Ubuntu based distribution that includes a collection of applications and plugins for professional audio production. It is compatible with Debian and Ubuntu repositories. KXStudio 14.04.5 LTS was released June 11, 2017.
71. Lakka
    http://www.lakka.tv/
    Lakka is a lightweight Linux distribution that transforms a small computer into a full blown game console. Lakka joined the list with the release of version 2.0, dated April 28, 2017. Lakka 2.1 was released November 28, 2017.
72. LEDE
    https://lede-project.org
    The LEDE Project (Linux Embedded Development Environment) is a Linux operating system based on OpenWrt. It is a complete replacement for the vendor-supplied firmware of a wide range of wireless routers and non-network devices. LEDE 17.01.0-rc1 was released January 31, 2017. LEDE 17.01.4 was released October 18, 2017. The project merged with OpenWrt in January 2018. The LEDE 17.01 series remains supported, but the next major version will use the OpenWrt name.
73. LibreELEC
    https://libreelec.tv/
    LibreELEC is a lightweight 'Just enough OS' Linux distribution purpose-built for Kodi on current and popular media-center hardware. It is a fork of the OpenELEC project, started in March 2016. LibreELEC is Kodi oriented but other forks provide the stable JeOS base for Plex Embedded, Lakka, and a number of single-purpose IoT and maker projects. LibreELEC (Krypton) 8.2.1 was released November 21, 2017. LibreELEC (Krypton) 8.2.4 MR was released March 14, 2018. LibreELEC (Leia) 9.0.2 was released May 11, 2019. LibreELEC 9.1.002 Alpha was released July 25, 2019.
74. LinHES
    http://www.linhes.org/
    Formerly known as KnoppMyth, this distribution was a combination of Knoppix and MythTV, providing an easy-to-use TV settop box. KnoppMyth R5F27 was released September 9, 2007. KnoppMyth was renamed LinHES, Linux Home Entertainment System, in 2009. It also switched to an Arch Linux base. LinHES 8.5 was released December 9, 2017. LinHES 8.6 was released March 18, 2019.
75. Linutop OS
    http://www.linutop.com/software.en.html
    http://www.linutop.com/index.en.html
    Linutop, a French company, makes a fanless mini PC and an Ubuntu-based distribution optimized for its hardware. Linutop OS is a small, secured OS for for kiosks, media centers, digital signage, and more. A free demo of the distribution is available and should run on all types of PCs. This entry was added to the list July 25, 2012. Linutop OS 5.0 was released September 4, 2012. Linutop OS 14.04 was released September 24. 2014.
76. LinuxConsole
    http://linuxconsole.org/
    http://freshmeat.net/projects/linuxconsole/
    LinuxConsole is a "live" Linux distribution that comes from France. You can boot it from CD, HD, USB, or PXE. There is a "core" ISO image (55MB), with all the drivers (3D and ADSL included) needed to install it or just try it. LinuxConsole joined the list at version 0.4RC2 released March 10, 2004. That version was based on Mandrakelinux 9.1, however later versions are original (not based on another distribution). Version 0.4.5.1 was released September 20, 2004. LinuxConsole 2.5 was released August 26, 2016.
77. linuX-gamers.net Live
    http://live.linux-gamers.net/
    The project live.linuX-gamers.net provides a "boot 'n play" system, designed to run on CD, DVD or USB. The first public release of the live DVD, v0.9.1, was released June 16, 2007. linuX-gamers.net live 0.9.7 was released May 9, 2011.
78. LinuxMCE
    http://www.linuxmce.com/
    LinuxMCE is a free, open source distribution based on Kubuntu. It includes a complete whole-house media solution with PVR and distributed media, and the most advanced smarthome solution available. It is stable, easy to use, and requires no knowledge of Linux and only basic computer skills. LinuxMCE joined the list at version 0704, released August 7, 2007. LinuxMCE-0810 beta was released October 16, 2009.
79. LuneOS
    http://webos-ports.org
    LuneOS is a fork of Open webOS. The main focus of LuneOS is to provide a mobile operating system which is driven by the community. The September 1, 2014 release of LuneOS "Affogato" supported the Nexus 4 and HP TouchPad.
80. Mangaka
    https://animesoft.wordpress.com/linux/
    Mangaka is a GNU/Linux system based on Ubuntu and Debian. It’s especially developed for the specific needs of the anime and manga community from Japan and world wide, including by default professional free software for fansubbing, web browsing, multimedia playback and 2D graphical creations as well codecs, java and flash out-of-the-box. Mangaka joined the list with the release of Linux Mangaka Nyu (Beta), dated June 6, 2015. Linux Mangaka Nyu (Final) was released June 21, 2015. Linux Mangaka Chu was released October 14, 2015.
81. Maru OS
    http://maruos.com/
    Maru works on your phone and transitions to a Debian desktop when plugged into a monitor via HDMI. A bluetooth mouse and keyboard can be used in desktop mode. The phone runs independently of the desktop so you can take a call and work on your big screen at the same time. The initial beta release of Maru was based on Android Lollipop. Maru was released open source February 11, 2016 and is still in the early stages of becoming a collaborative project. Maru OS 0.3 was released November 3, 2016. Maru OS 0.6 Okinawa, released March 6, 2019, uses Android 8.1 Oreo, LineageOS, and Debian 9 stretch under the hood.
82. MeeGo
    http://meego.com/
    MeeGo merges two mobile Linux projects, Moblin and Maemo. MeeGo targeted platforms such as netbooks/entry-level desktops, handheld computing and communications devices, in-vehicle infotainment devices, connected TVs, and media phones. All of these platforms have common user requirements in communications, application, and internet services in a portable or small form factor. The first release was announced March 31, 2010. MeeGo v1.0 was released May 25, 2010. The handset baseline source code was made available to the development community June 30, 2010. MeeGo for IVI "in-vehicle infotainment" 1.0 was released August 2, 2010. The seventh update for MeeGo v1.0 was released March 1, 2011. MeeGo 1.1 was released October 28, 2010. MeeGo 1.1 Update 5 was released May 24, 2011. MeeGo Tablet Developer Preview was released March 30, 2011. MeeGo 1.2 was released May 19, 2011. Tizen, see entry below, is an amalgamation of the MeeGo and LiMo projects directed by Samsung and Intel.
83. Mer
    http://merproject.org/
    The Mer project was announced in October 2011. Mer is an open, mobile-optimized, core distribution aimed at device manufacturers; powered by Qt/QML and HTML5 - openly developed, inclusive, and meritocratically governed. The core is based on MeeGo and Mer plans to share effort with the Tizen project.
84. Mindi Linux
    http://www.mondorescue.org/
    Mindi builds boot/root disk images using your existing kernel, modules, tools and libraries. Version 0.71_20021109 was released November 10, 2002. Version 0.87 was released October 30, 2003. MondoRescue 2.2.1 was released January 2, 2007. MondoRescue 2.2.9.7 was released June 28, 2011.
85. MorpheusArch
    http://morpheusarch.co.uk/
    MorpheusArch Linux is based on Arch Linux and contains tools for data recovery. MorpheusArch Linux can also be considered a DFTT (Digital Forensics Tool Testing Image) due to its ISO9660 compliance. It offers a very lightweight environment and will fit on a 1GB USB stick. The current version was 20-01-17-2017.01.20 when this entry was added in April 2017.
86. Myrinix
    http://myrinix.com/
    Myrinix- Digital Home Edition is a Linux (Debian and sidux) based live CD. Using Myrinix you can connect a High Definition Plasma TV or a big LCD screen to a central server that can record and play DVD or internet. The Myrinix 2007-08/4 live CD/DVD was released March 19, 2008. Myrinix 201104 was released April 5, 2011.
87. Neophysis
    http://sourceforge.net/apps/mediawiki/neophysis/
    http://sourceforge.net/projects/neophysis/
    Neophysis is a distribution for the Openmoko Freerunner, although it could potentially run on any embedded system. It aims to provide fast boot speed and phone stabiltity. The project was in an alpha stage when it was added to the list, March 8, 2010. Version 0.3.1 preview was released August 2, 2010.
88. NimbleX
    http://www.nimblex.net/
    http://custom.nimblex.net/
    NimbleX is a small but versatile operating system which is able to boot from a small 8 cm CD, from flash memory like USB pens or MP3 players and even from the network. Because it runs entirely from a CD, USB or network it doesn't require installation or even much hardware. NimbleX is based on Slackware with the use of linux-live scripts. NimbleX 2007 was released December 25, 2006. NimbleX 2007v2 was released April 25, 2007. Custom NimbleX allows you to generate a customized Linux distribution. Custom NimbleX 2 RC1 was released August 3, 2007. NimbleX 2007 v2 now comes in a sub100MB Edition. An updated sub100 was released September 28, 2007. NimbleX 2008 was released July 22, 2008. NimbleX 2010 Beta was released April 29, 2010.
89. NixOS
    http://nixos.org/
    NixOS is a Linux distribution based on Nix, a purely functional package management system. NixOS is an experiment to see if an operating system can be built in which software packages, configuration files, boot scripts and the like are all managed in a purely functional way. That is, they are all built by deterministic functions and they never change after they have been built. NixOS is continuously built from source in Hydra, the Nix-based continuous build system. Entry added May 26, 2009. In January 2013 NixOS switched from Upstart to systemd. Nix 1.5.2 was released May 13, 2013. Nix 2.1 was released September 2, 2018. NixOS 18.09 "Jellyfish" was released October 5, 2018. NixOS 19.03 "Koi" was released April 2019.
90. NSLU2-Linux
    http://www.nslu2-linux.org/
    Wiki Home Page
    The NSLU2-Linux project exists to discuss, develop and modify the firmware and hardware of the Linksys NSLU2, the Synology DS101, the Iomega NAS100d, the D-Link DSMG600, and other ixp4xx-based devices with large attached storage. SlugOS is the collective name for a group of firmware distributions which are derived from a common source base (and therefore share common documentation as a result of that). OpenSlug uses the OpenEmbedded package repository, and is designed for use with an external disk. UcSlugC also uses the OpenEmbedded package repository, but is designed to be the basis of some other application-specific firmware distribution, rather than a firmware distribution in its own right. SlugOS/LE (formerly known as DebianSlug) uses the Debian package repository and is an alternative for those people who want to run Debian on their NSLU2. SlugOS 5.3 beta was released March 2009.
91. Occidentalis
    http://learn.adafruit.com/adafruit-raspberry-pi-educational-linux-distro/
    Adafruit created Occidentalis, a distribution for the Raspberry Pi, named for the black raspberry, Rubus occidentalis. The initial version, 0.1, is based on Raspbian (Debian) Wheezy and was released August 2, 2012. Occidentalis has been tweaked to be more hardware-hacker friendly and aims to be a good tool for teaching electronics using the Raspberry Pi. Occidentalis v0.2 was released August 31, 2012.
92. openArtist
    http://www.openartisthq.org/
    openArtist is a Linux operating system for artists. Based on Ubuntu, openArtist incorporates packages from a variety of other distributions. There are also many selfmade packages, and some freeware. It can be used as live CD or installed to a hard drive. Software packages for 2D, 3D, Audio, Video, VJ, Hardware Interfacing, Programming and Collaboration have been integrated. openArtist was added to the list on June 24, 2009. An alpha release (based on Ubuntu 12.04) was announced October 31, 2012.
93. OpenELEC
    http://www.openelec.tv/
    Open Embedded Linux Entertainment Center, or OpenELEC for short, is a small Linux distribution built from scratch as a platform to turn your computer into a complete XBMC (Kodi) media center. OpenELEC is designed to make your system boot as fast as possible and the install easily so that anyone can turn a blank PC into a media machine in less than 15 minutes. OpenELEC 1.0 was released October 20, 2011. OpenELEC 8.0 was released April 9, 2017.
94. OpenMediaVault
    http://www.openmediavault.org/
    http://sourceforge.net/apps/mediawiki/openmediavault/index.php
    OpenMediaVault is the next generation network attached storage (NAS) solution based on Debian Linux. It contains services like SSH, (S)FTP, SMB/CIFS, DAAP media server, RSync, BitTorrent client and many more. Thanks to the modular design of the framework it can be enhanced via plugins. OpenMediaVault is primarily designed to be used in home environments or small home offices, but is not limited to those scenarios. It is a simple and easy to use out-of-the-box solution that will allow everyone to install and administrate a Network Attached Storage without deeper knowledge. The initial release was v0.2, dated October 17, 2011. OMV 2.1 (Stone burner) was released June 29, 2015. OMV 3 (Erasmus), based on Debian 8 (jessie), was released June 13, 2017.
95. OpenWrt
    http://openwrt.org/
    OpenWrt started out in 2003 as a Linux distribution for the Linksys WRT54G. Instead of trying to cram every possible feature into one firmware, OpenWrt provides only a minimal firmware with support for add-on packages. For users this means the ability to custom tune features, removing unwanted packages to make room for other packages and for developers this means being able to focus on packages without having to test and release an entire firmware. WhiteRussian 0.9 was released February 3, 2007. OpenWrt Backfire 10.03.1 was released December 21, 2011. OpenWrt Attitude Adjustment 12.09 was released April 25, 2013. OpenWrt "Barrier Breaker" 14.07 was released October 2, 2014. OpenWrt "Chaos Calmer" 15.05.1 was released March 16, 2016. OpenWrt merged with LEDE in January 2018. OpenWrt 15.05 received limited support, while the LEDE 17.01 series was the most up-to-date. OpenWrt/LEDE 17.01.5 "Reboot" was released July 17, 2018. OpenWrt 18.06.2 was released January 31, 2019.
96. Oryx Linux
    http://oryx-linux.org/
    Oryx Linux is an embedded Linux distribution built on top of OpenEmbedded and The Yocto Project. It incorporates a lightweight container runtime engine to bring the benefits of containerisation to the embedded sector without disrupting existing developer workflows. Togán Labs provides commercial support for Oryx. Oryx Linux 0.2.0 was released July 5, 2017.
97. OSGeoLive
    http://live.osgeo.org
    OSGeoLive is a self-contained bootable [DVD, USB, VM] based on Lubuntu, that allows you to try a wide variety of open source geospatial software. OSGeo-Live 11.0 was released August 9, 2017. OSGeoLive 12.0 was released September 11, 2018.
98. OSMC
    https://osmc.tv/
    OSMC (Open Source Media Center) is a free and open source media player based on Debian and Kodi. Founded in 2014, OSMC lets you play back media from your local network, attached storage and the Internet. A slightly belated December 2017 release (with Debian Stretch and Kodi 17.6) was announced January 9, 2018. OSMC releases regular updates, based on Debian stable, with newer versions of Kodi.
99. OviOS
    https://sourceforge.net/projects/ovios/
    OviOS is an open source storage OS based on the Linux kernel and includes opensource software needed to create a fully functional, highly performant storage server. OviOS joined the list with the release of version 3.0, dated December 30, 2018.
100. PapugLinux
     http://www.papuglinux.net/
     PapugLinux is a minimal GNU/Linux live CD based on Gentoo, for x86 computers. The goal of PapugLinux is to provide a minimal but functional free operating system and to be runable on most computers, from 128mb old systems to the latest powerful configurations. Papug 11.1a was released January 23, 2011.
101. Parted Magic
     http://partedmagic.com/
     Parted Magic is a Linux LiveCD/USB/PXE with its elemental purpose being to partition hard drives. Optimized at approximately 30MB, the Parted Magic OS employs core programs of GParted and Parted to handle partitioning tasks with ease, while featuring other useful programs (e.g. Partition Image, TestDisk, fdisk, sfdisk, dd, ddrescue, etc.) and an excellent set of documentation to benefit the user. An extensive collection of fileystem tools are also included, as Parted Magic supports the following: ext2, ext3, ext4, fat16, fat32, hfs, hfs+, jfs, linux-swap, ntfs, reiserfs, reiser4, and xfs. Parted Magic 2.2 was released May 7, 2008. Parted Magic 6.7 was released September 2, 2011. Parted Magic 2018_01_08 is out.
102. PelicanHPC
     http://pelicanhpc.awict.net/
     http://pareto.uab.es/mcreel/PelicanHPC/
     PelicanHPC picked up where ParallelKnoppix left off, providing a live CD that will let you set up a high performance computing cluster in a few minutes. The frontend node (either a real computer or a virtual machine) boots from the CD image. The compute nodes boot by PXE, using the frontend node as the server. All of the nodes of the cluster get their filesystems from the same CD image, so it is guaranteed that all nodes run the the same software. The CD image is created by running a single script, which takes advantage of the Debian Live infrastructure. If you need to add packages, it is very easy to create a custom version by adding the package names to the script and then running it. Pelican v1.0 was released January 10, 2008. Pelican 2.0 was released January 12, 2010. PelicanHPC 2.9 was released January 2013 and an End-of-Life was announced in June 2013. The project was revived and PelicanHPC 3.0 was released in November 2014. PelicanHPC 4.1 was released December 30, 2016.
103. Pentoo
     http://www.pentoo.ch/
     Pentoo is a Linux LiveCD, based on Gentoo, with a focus on penetration testing. The current version was 2005.1 when Pentoo was added to this list on June 1, 2005. Mini-Pentoo 2006.1 was released July 5, 2006. Pentoo 2015 RC5 was released August 2, 2016.
104. PicUntu
     http://ubuntu.g8.net/
     documentation
     wiki PicUntu is an Ubuntu based system for RK3066 chipset devices. The initial version, 0.9b, was based on Ubuntu 12.10. PicUntu joined the list with the release of 0.9 RC 2.2, dated January 17, 2013.
105. Plop Linux
     http://www.plop.at/
     Plop Linux is a small distribution that can boot from CD, DVD, USB flash drive (UFD), USB harddisk or from network with PXE. It's designed to rescue data from a damaged system, backup and restore operating systems, automate tasks and more. Plop 4.1.2 was released August 9, 2011. PlopKexec 1.4.1 was released August 13, 2016. Plop 4.3.4 was released February 17, 2018.
106. Poseidon Linux
     https://sites.google.com/site/poseidonlinux/
     Brazilian site
     Poseidon Linux was designed as a friendly and complete desktop, based on open source software and aimed at the Brazilian/International scientific community. This operating system is based on Ubuntu and inspired by Quantian Linux. It offers several specific tools in the areas of GIS, 3D Visualization, Mathematics, Statistics and several otherfields of research. It also has all the software expected in a modern desktop such as an office suite - with spell checker, web browsers, e-mail readers, instant messaging, and more. Poseidon Linux 3.0, released June 21, 2008, supports Brazilian Portuguese, Spanish, English and German. Poseidon 3.1 was released November 23, 2008. Poseidon 3.2 was released May 11, 2010. Poseidon 4.0 was released July 28, 2011. Starting with Poseidon 5.0 the project started focusing on Bathymetry, Seafloor Mapping and GIS software. Poseidon 8.0 was released November 2016.
107. postmarketOS
     https://postmarketos.org/
     https://github.com/postmarketOS/
     postmarketOS is a touch-optimized, pre-configured Alpine Linux with its own packages, that can be installed on smartphones. The idea is to extend the useful life of a smartphone. postmarketOS was very much a work in progress when this entry was added May 30, 2017, and remains so in this April 2018 update.
108. Proxmox
     http://www.proxmox.com/en/
     Proxmox Server Solutions GmbH provides Proxmox Virtual Environment and Proxmox Mail Gateway, as well as support services and training. Proxmox Mail Gateway 4.0 was released January 20, 2015. Proxmox VE 4.0 was released October 6, 2015. Proxmox VE 5.4 was released April 11, 2019. Proxmox Mail Gateway 5.2 was released March 26, 2019. Proxmox VE 6.0 was released July 16, 2019. Proxmox Mail Gateway 6.0 was released August 27, 2019.
109. Puppy Linux
     http://www.puppylinux.org/
     Puppy Linux Family Tree
     Puppy Linux is a very small, yet quite fully featured distribution that uses the Woof build system. There are many puplets created by members of the Puppy community; some use Slackware or Ubuntu as a base. Puppy 0.7.6 was released May 11, 2003. BionicPup (based on Ubuntu 18.04 Bionic Beaver) was released March 24, 2019.
110. RancherOS
     http://rancher.com/rancher-os/
     RancherOS is a minimalist Linux distribution for running Docker containers. It was added to the list June 27, 2016. RancherOS 0.5.0 was released August 12, 2016. RancherOS 1.0.0 was released April 12, 2017. RancherOS 1.5.0 was released December 29, 2018.
111. Raspberry Slideshow
     http://www.binaryemotions.com/digital-signage/raspberry-slideshow
     Raspberry Slideshow is an operating system for the Raspberry Pi focused on image and video slideshows. It plays all media contained in a USB key, fetched from a Windows (Samba) share, from a Webserver or FTP server. The operating system can refresh the media list at given intervals as well, in order to slide images and videos according to remote changements. Raspberry Slideshow joined the list with the release of Raspbian Stretch-based 10.0, November 20, 2017.
112. Raspbian
     http://www.raspbian.org/
     Raspbian is a Debian-based distribution optimized for the Raspberry Pi hardware. Raspbian provides more than a pure OS: it comes with over 35,000 packages, pre-compiled software bundled in a nice format for easy installation on your Raspberry Pi. Raspbian joined the list July 23, 2012. Debian "Jessie" based Raspbian 2017-06-21 is out. Raspbian "Stretch" was released August 17, 2017. Raspbian 2018-11-13 is out. Raspbian for the Raspberry Pi 4, released June 24, 2019, is based on Debian "Buster".
113. RebeccaBlackOS
     http://sourceforge.net/projects/rebeccablackos/
     RebeccaBlackOS showcases Wayland and Weston. This entry was added to the list May 24, 2013. RebeccaBlackLinux_i386.iso and RebeccaBlackLinux_Reduced_i386.iso were released September 1, 2013. ISOs (based on Ubuntu 14.10 and Wayland/Weston 1.6+) were released October 27, 2014. ISO images based on Debian-testing using SVN Revision 4086 were released February 8, 2016. ISOs with Wayland desktops; KDE, Gnome, Enlightenment, Orbital, Hawaii, Orbment, and Sway were released October 10, 2016. RebeccaBlackOS 2019-05-06 was released May 6, 2019.
114. Recovery Is Possible! (RIP)
     http://www.tux.org/pub/people/kent-robotti/looplinux/rip/
     http://freshmeat.net/projects/recoveryispossible/
     RIP is a CD or floppy boot/rescue/backup system. It has support for a lot of filesystem types (Reiserfs, ext2/3, iso9660, UDF, XFS, JFS, UFS, HPFS, MINIX, MS DOS, NTFS, UMSDOS, and VFAT) and contains a bunch of utilities for system recovery. It might also be possible to install and boot it from a LS-120 floppy drive. It has been designed for non-networked stand-alone home PC hard drive booting and rescue. Only the CD version has UDF/HPFS/MINIX/XFS/JFS filesystem support. RIP joined the list at verion 51, released March 21, 2002. RIP 4.3 was released December 22, 2007. RIP 13.7 was released January 15, 2012.
115. RedHawk Linux
     http://real-time.ccur.com/products_rt_redhawklinux_server.aspx
     RedHawk Linux is the product of Concurrent Computer Corporation and is used in Concurrent's hardware solutions. It's an industry-standard, POSIX-compliant, real-time, low-latency version of Linux, compatible with Red Hat Enterprise Linux. Version 1.3 was released May 22, 2003. Current versions of RedHawk will be based on supported versions of RHEL.
116. Redo Backup and Recovery
     http://redobackup.org/
     Redo Backup and Recovery is a disaster recovery solution. It allows bare-metal restore hardware failure and it is also the ultimate antivirus: Even if your hard drive melts or gets completely erased by a virus, you can have a completely-functional system back up and running in as little as 10 minutes. Redo joined the list with the release of v1.0.4, dated November 20, 2012.
117. Remix OS
     http://www.jide.com/en/remixos-for-pc
     Remix OS for PC is an Android remix for desktop computers. Developer version 2016011201 was an initial release. Remix OS for PC 3.0.203 was released August 31, 2016. An end to development was announced July 17, 2017.
118. Rescatux
     http://www.supergrubdisk.org/
     Rescatux is a GNU/Linux rescue cd that comes with Rescapp. Rescapp is a nice wizard that will guide you through your rescue tasks. Super Grub2 Disk is included. Rescatux joined the list with the release of v0.30.2, dated November 20, 2012. Super Grub2 Disk 2.00s2 was released May 18, 2014. Super Grub2 Disk 2.02s5 was released October 29, 2016. Rescatux 0.51 beta 3 was released December 10, 2017. Super Grub2 Disk 2.02s9 was released May 7, 2017. Super Grub2 Disk 2.02s10 was released November 1, 2018. Rescatux 0.71-beta7 was relased May 8, 2019. Super Grub2 Disk 2.04s1 was released August 26, 2019.
119. resinOS
     https://resinos.io/
     resinOS is a minimal distribution with the services needed to run Docker reliably on an embedded device and nothing else. It's based on Yocto and available for a number of platforms. ResinOS was added to the list October 11, 2016 with the release of resinOS 2.0-beta.1.
120. Rocks Cluster Distribution
     http://www.rocksclusters.org/
     Rocks Cluster emphasizes ease of management, configurability and security in clusters. An early version was based on Red Hat Linux 7.3. Rocks is now based on CentOS release 4/update 5 and all updates as of July 4, 2007. Rocks 4.0.0 (Whitney) was released June 7, 2005 with support for Athlon, Itanium, Nocona (EM64T), Opteron, and Pentium. Rocks 6.2 (Sidewinder) was based on CentOS 6.6 and released May 11, 2015 for 64-bit only. Rocks 7 was released December 1, 2017.
121. Rockstor
     http://rockstor.com/
     Rockstor is a Linux and btrfs powered NAS and Cloud storage server system. Rockstor offers Personal Cloud Server, SMB Cloud Server, and Traditional NAS server. Rockstor joined the list with the release of Rockstor 3.8-10, dated December 11, 2015. Rockstor 3.9.1 was released July 2, 2017.
122. Rogue Class Linux
     http://rogueclass.org/
     Rogue Class Linux (RCL) is a toy distribution for playing games and reading books. RCL has a streamlined installer and it supports joystick controls in most of the programs. RCL favors turn-based games, such as puzzles and rogue-like games. Slackware-based RCL 1 was released June 9, 2013.
123. Sabily
     http://www.sabily.org/
     Sabily, formerly UbuntuME or Ubuntu Muslim Edition, is a free, open source operating system based on Ubuntu Linux with Islamic software (prayer times, Quran study tool, web content filtering tool, etc.) and a different design. The Feisty-based UbuntuME 7.04 was released October 14, 2007. UbuntuME 7.10 was released November 27, 2007. UbuntuME 8.04.1 was released July 4, 2008. UbuntuME 8.10 was released November 17, 2008. Sabily 9.10 "Gaza" was released December 27, 2009. Sabily 10.04 (Manarat) was released June 27, 2010. Sabily 10.10 "Al Quds" was released November 2, 2010. Sabily 11.04 "Al-Badr" was released May 5, 2011. Sabily 11.10 was released December 19, 2011.
124. Sailfish OS
     https://sailfishos.org/
     Sailfish OS is a descendant of Maemo/MeeGo/Mer. It's made by the Finnish company, Jolla for use in smart phones and other mobile devices. This entry was added November 22, 2012 with the initial announcement of Sailfish. Sailfish 1.0 was released February 21, 2014. Sailfish OS 2.0 was released March 2, 2015. Sailfish OS 2.1.4 was released February 20, 2018. Sailfish OS 2.2.1 was released September 11, 2018. Sailfish OS 3 was introduced in February 2018. Sailfish OS 3.0.3 "Hossa" was released May 7, 2019. Sailfish OS 3.1 "Seitseminen" was released July 25, 2019.
125. Scyld Beowulf
     https://www.penguincomputing.com/
     Penguin Computing developed Scyld Beowulf, the original cluster virtualization platform, created by Donald Becker, for Linux 2.4.X-based HPC clusters. Penguin Computing continues to provide Scyld products, such as Scyld ClusterWare and Scyld Insight for infrastructure monitoring.
126. SELKS
     https://www.stamus-networks.com/open-source/#selks
     SELKS is both Live and installable ISO based on Debian implementing a ready to use Suricata IDS/IPS. The name comes from its major components: Suricata Elasticsearch Logstash Kibana Scirius. After starting or installing SELKS, you get a running Suricata with IDPS and NSM capabilities, Kibana to analyse alert and events and Scirius to configure the Suricata ruleset. The first public release, SELKS 1.0 beta1, was announced May 27, 2014. SELKS 1.0 was released October 16, 2014. SELKS 3.0 was released August 12, 2016. SELKS5 RC1 was released December 21, 2018.
127. Shell-Linux
     http://shellinux.crazycoder.me/
     Shell-Linux aims to be light, stable, user friendly, and fast. The initial version (3.0) had no X system and was just a little shell with a package manager. Shell-Linux 5.5 includes a Light TinyX (Xvesa) X system and JWM window manager. Shell-Linux was added to the list May 21, 2013.
128. SliTaz GNULinux
     http://www.slitaz.org/
     SliTaz is a very small desktop system that runs from live CD or live USB. SliTaz v1.0 was the first stable version to be released, after two years of development. This version, released March 22, 2008, weighed in at under 25Mb using light-weight packages like the JWM window manager and the lighttpd web server. Cooking is the SliTaz development branch and new Cooking betas are usually available monthly. SliTaz 3.0 was released March 28, 2010. SliTaz 4.0 was released April 10, 2012. SliTaz Raspberry Pi was released March 29, 2014. SliTaz 5.0 Rolling was released July 17, 2016.
129. sposkpat
     http://sourceforge.net/projects/sposkpat/
     Single Purpose Operating System: Kpatience distractionless card game (sposkpat) turns any PC into a distractionless Patience card game. It runs inside qemu and VMware virtual machines, completely in RAM. It's based on KDE's kpat and Debian 6.0 live-build. sposkpat 1.02 was released October 29, 2012. sposkpat 1.05 was released December 2, 2015.
130. SteamOS
     http://steamcommunity.com/groups/steamuniverse#
     http://store.steampowered.com/steamos/
     SteamOS is the operating system behind Valve Software's Steam gaming platform. The initial public version was SteamOS 1.0 "alchemist" beta. It was based on Debian 'wheezy' (stable 7.1) with some proprietary bits, and it was released December 14, 2013. SteamOS "brewmaster", based on Debian 8.1, was released June 25, 2015.
131. StressLinux
     http://www.stresslinux.org/
     http://freshmeat.net/projects/stresslinux/
     StressLinux is a minimal Linux distribution that runs from a bootable CDROM, USB, VMWare or via PXE. It makes use of some utitlities 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. Initial version 0.1.5b was released July 4, 2003. StressLinux 0.5.111 (based on openSUSE 11.2) was released April 23, 2010. stresslinux 0.7.106 was released July 31, 2011.
132. SuperGamer
     http://supergamer.org/
     SuperGamer is a live DVD with lots of games. All Games are Linux Native. It was originally based on PCLinuxOS, but later moved to a VectorLinux base. A test release of SuperGamer-VL was announced June 29, 2007. Supreme SuperGamer 2.5 was released March 14, 2011.
133. SystemRescueCd
     http://www.sysresccd.org/
     SystemRescueCd is a Linux system on a bootable media for repairing your system and your data after a crash. It also aims to provide an easy way to carry out admin tasks on your computer, such as creating and editing the partitions of the hard disk. It contains a lot of system utilities (parted, partimage, fstools, ...) and basic ones (editors, midnight commander, network tools). It aims to be very easy to use and supports many file systems. SystemRescueCd was based on the Gentoo LiveCd when it joined the list with the release of version 0.3.3 on March 1, 2007. SystemRescueCD switched to an Arch Linux base (and dropped 32bit support) with the release of version 6.0 on February 2, 2019.
134. TalkingArch
     http://talkingarch.tk/
     TalkingArch is a respin of the Arch Linux live CD/USB image modified to include speech and braille output for blind and visually impaired users. TalkingArch joined the list with the release of v2014.04.01. TalkingArch monthly snapshot for April 2017 is x86_64 only.
135. Tango Studio
     http://tangostudio.tuxfamily.org/
     Tango Studio is a Debian derivative for musicians and professional recording studios. It includes both free and nonfree audio applications. Debian Wheezy based Tango Studio 2.2 was released June 3, 2014.
136. ThinStation
     http://thinstation.sourceforge.net/
     ThinStation is a Linux distribution that enables you to convert standard PCs into full-featured diskless thinclients supporting all major connectivity protocols. It can be booted from the network using Etherboot/PXE or from standard media like floppy/CD/hd/flash-disk etc. The configuration is centralized to simpliy terminal management. The initial Freshmeat release was on May 15, 2003, version 0.91. Version 2.2 was released October 17, 2006. Thinstation 5.0, the sucessor to v2.2.2, is based on Crux 2.7 but the user front end is much like it was before. Version 5.0 was released February 10, 2012.
137. Tiny Core Linux
     http://tinycorelinux.net/
     Tiny Core Linux is a very small (10 MB) minimal Linux Desktop. It is based on Linux 2.6 kernel, Busybox, Tiny X, Fltk, and Jwm. The core runs entirely in ram and boots very quickly. It is not a complete desktop nor is all hardware completely supported. It represents only the core needed to boot into a very minimal X desktop typically with wired internet access. Tiny Core joined the list on March 16, 2009, when 1.2 was the current version. Tiny Core 4.2, released December 26, 2011, refactored Tiny Core to be highly modular to provide a foundation for user created desktops and also introduced CorePlus. piCore 6.0 was released January 20, 2015. Tiny Core Linux 6.4.1 was released November 29, 2015. Tiny Core 9.0 was released February 26, 2018.
138. TinyMe
     http://tinymelinux.com/
     TinyMe is a minimalist Linux distribution aimed at making your computing experience as bloat and lag-free as possible. TinyMe is suitable for old computers, or for those who like to mess around with small/fast systems, or just want a minimal environment. Early versions of TinyMe were a smaller version of PCLinuxOS, with less than 200 MB on a live CD. TinyMe 2008.0 was released May 23, 2008. TinyMe 2008.1 was released December 10, 2008. TinyMe "Acorn" 2012.03.05 Alpha is available.
139. Tizen
     https://www.tizen.org/
     Tizen has its roots in MeeGo and LiMo. The project was announced on September 27, 2011, to be directed by Samsung and Intel. Tizen runs under the hood of many Samsung products. Tizen 1.0 Larkspur was released April 30, 2012. Tizen 2.0 Magnolia was released February 19, 2013. Tizen 2.2.1 was released November 8, 2013. Tizen Common Milestone 3.0.2014.Q3 was released November 4, 2014. Tizen-Common Q1 2015 was released June 30, 2015. Tizen 3.0 started shipping on some Samsung phones in May 2017. Tizen 5.5 Milestone 1 was released May 30, 2019.
140. trixbox
     http://www.trixbox.org/
     trixbox is a telephony application platform based on Asterisk Open Source PBX Software. The trixbox application platform makes it fast and simple to install and configure your business-class telephony system. With unlimited extensions, voicemail-to-email, music on hold, call parking, analog lines or high density T1/E1 circuits and many other features, trixbox provides all the functionality your business needs. trixbox brings big business PBX features to small and medium-sized businesses. trixbox 2.2 was released May 3, 2007. trixbox CE 2.4 was released January 4, 2008. trixbox 2.6.2.2 was released February 13, 2009. trixbox 2.8.0.4 was released March 27, 2011.
141. TurnKey Linux
     http://www.turnkeylinux.org/
     TurnKey Linux provides a set of software appliances. Appliances are currently available as a single bootable ISO image that can run on real hardware in addition to most types of virtual machines. Each TurnKey appliance is different, but they are all carefully built from the ground up with the minimum components needed to serve a specific role. Available appliances include LAMP, LAPP, Joomla, Drupal, MediaWiki, and more. TurnKey was added to the list December 15, 2008. Debian Squeeze based TurnKey Core 12.0 was released August 30, 2012. TurnKey 12.1 was released June 6, 2013. TurnKey 13.0 was released November 20, 2013. TurnKey 14.1 was released April 15, 2016. TurnKey 15.0 was released July 27, 2018.
142. UBOS
     http://ubos.net/
     UBOS aims to make it 10x easier to run server-side apps for yourself, or for your family, on hardware you own. It is available for Raspberry Pi, x86_64 PCs, and as a VirtualBox image. The first beta was released November 24, 2014. UBOS beta 13 was released March 3, 2018. UBOS beta 14 was released April 28, 2018.
143. Ubuntu Christian Edition
     http://ubuntuce.com/
     Ubuntu Christian Edition is a free, open source operating system geared towards Christians. It is based on Ubuntu Linux and is suitable for both desktop and server use. Along with the standard Ubuntu applications, Ubuntu Christian Edition includes the best available Christian software. The latest release contains GnomeSword, a top of the line Bible study program for Linux based on the Sword Project. There are several modules installed with GnomeSword including Bibles, Commentaries, and Dictionaries. Ubuntu CE v1.4 (based on Ubuntu 6.06.1 LTS) was released October 3, 2006. Ubuntu CE 12.04 was released September 6, 2012.
144. Ubuntu Satanic Edition
     http://ubuntusatanic.org/
     Ubuntu Satanic Edition provides a stock Ubuntu system with dark themes and metal music on the installation CD. Version 666.9, released December 6, 2010, was based on Ubuntu 10.10. Ubuntu Satanic Edition 666.10 (Necrophiliac Necromancer) was released July 28, 2011.
145. Untangle Gateway
     http://www.untangle.com/
     Untangle Gateway is a KNOPPIX-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. All Untangle apps can be downloaded indvididually to tailor your Untangle Server to the specific needs of your network. Untangle Gateway 6.2 (based on Debian Lenny) was released June 5, 2009. Untangle 8.1 was released February 13, 2011. Untangle Gateway 9.4 was released January 10, 2013. Untangle 11.0 was released October 6, 2014. Untangle 12.1 was released July 13, 2016. Untangle NG Firewall 13.1 was released September 6, 2017. Untangle NG Firewall 14.2 was released June 11, 2019.
146. Vinux
     http://vinuxproject.org/
     Vinux is a Ubuntu derived distribution optimised for the needs of blind and partially sighted users. By default Vinux provides two screen-readers, Braille display support and a friendly community. When you boot the live Vinux image, you will be greeted by the Orca screen reader enabling you to navigate the graphical Gnome desktop using keyboard commands. Finally, Brltty provides Grade 1 and 2 Braille output via Orca. Vinux 5.0, based on Ubuntu 14.04.3 LTS, was released November 4, 2015. Vinux 5.1, based on Ubuntu 14.04.5 LTS, was released January 18, 2017.
147. VortexBox
     http://vortexbox.org/
     VortexBox is a free, open source (GPL v3), quick-install ISO that turns your unused computer into an easy-to-use music server/jukebox. Once VortexBox has been loaded on an unused PC, 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 players such as Logitech Squeezebox, Sonos, or Linn. The music files can also be streamed to a Windows or Mac OSX system. VortexBox 1.7 was released December 30, 2010. VortexBox 1.10 was released September 7, 2011. VortexBox 2.3 was released April 9, 2014.
148. Vyatta
     http://www.vyatta.com/
     documentation
     The Vyatta Community Edition is a freely-available, community-supported release of Vyatta's open-source router/firewall product. Vyatta Community Edition 2 was released February 19, 2007. Vyatta Community Edition 2.2 (Camarillo) was released August 31, 2007. Vyatta Community 4.0 was released April 21, 2008. Vyatta CE 4.1.4 was released October 16, 2008. Vyatta Core 6.4 was released May 4, 2012. Vyatta Core 6.6 was released May 1, 2013.
149. VyOS
     https://vyos.io/
     VyOS is a community fork of Vyatta, a Linux-based network operating system that provides software-based network routing, firewall, and VPN functionality. VyOS joined the list with the 1.1.0 release, dated October 9, 2014. VyOS 1.2.2 LTS was released July 15, 2019.
150. wattOS
     http://www.planetwatt.com/
     wattOS is designed to be a lightweight but fully featured distribution using less energy. The OS will run on low power computers and recycled systems. wattOS Beta 2, released January 24, 2009, combines OpenBox with a Ubuntu mini install. wattOS R7.5 was released October 10, 2013. wattOS R8, released May 11, 2014, marks a change to a Debian "Wheezy" base and comes in Mate, LXDE and Microwatt editions. wattOS R9 switched back to an Ubuntu LTS base and was released May 31, 2015. wattOS R10 was released September 1, 2016. Microwatt-R10 was released September 23, 2016.
151. Wazo
     http://wazo.community/
     Wazo is a Debian-based distribution providing a unified communications platform for business. It includes the traditional PBX feature set and much more. Wazo 17.05 was released April 3, 2017. Wazo 17.16 was released November 20, 2017.
152. Webconverger
     http://webconverger.com/
     Webconverger uses Debian Live technology to provide a Web platform for kiosks, thin clients, or anywhere else you want a secure, dedicated web browser. It runs from a live CD or USB device. A hard drive install option will probably be available in the future. The maxi version of Webconverger has good support for CJK languages, such as Korean. This entry was added to the list April 23, 2008 when the latest version was Webconverger 3 beta with Firefox 3 beta. Webconverger 35.1 was released May 19, 2016.
153. webOS
     http://webosose.org/
     webOS is a web-centric and usability-focused software platform for smart devices. The operating system has evolved, passing through its journey from Palm to HP, and most recently to LG Electronics. webOS became an open-source project, named webOS Open Source Edition (OSE), in March 2018.
154. Window Maker Live
     http://wmlive.sourceforge.net/ Window Maker Live (wmlive) is an installable live CD/ISO, based mostly on the "wheezy" branch of Debian Linux. Its main purpose is to serve as a show case for the Window Maker window manager. wmlive joined the list with the 2013-03-06 release, with Window Maker 0.95.4. wmlive 0.95.6-1 was released September 20, 2014.
155. XtreemOS
     http://www.xtreemos.eu/
     The overall objective of the XtreemOS project is the design, implementation, evaluation and distribution of an open source Grid operating system (called XtreemOS) with native support for virtual organizations (VO) and capable of running on a wide range of underlying platforms, from clusters to mobiles. The first release was dated December 22, 2008. The second public release was announced November 12, 2009. XtreemOS 3 was released February 10, 2012.
156. Zenwalk
     http://www.zenwalk.org/
     Zenwalk was formerly known as Minislack, a lightweight Slackware derivative. Zenwalk Linux focuses on Internet applications, multimedia and coding tools. The first Zenwalk release, v1.2, was released August 12, 2005. The first ZenLive Linux LiveCD was released June 30, 2006. Zenwalk 7.4 was released February 13, 2014. Zenwalk Live 7.4 was released April 28, 2014. Zenwalk 8.0 was released July 2, 2016. Zenwalk 220217 was released February 22, 2017.
157. Zeroshell
     http://www.zeroshell.net/eng/
     Zeroshell is a Linux distribution aimed at providing the main network services a LAN requires. It uses Netfilter and Linux iptables for firewalling. It runs from a live CD or bootable compact flash. Zeroshell 1.0.beta4 was released February 18, 2007. Zeroshell 1.0.beta16 was released September 10, 2011. Zeroshell 2.0.RC1 was released July 25, 2012.

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