Unsure what a Linux distribution is? Read the Linux Distribution Guide
AsteriskNOW is an open source Software Appliance; a customized Linux distribution that includes Asterisk, the Asterisk GUI, and all other software needed for an Asterisk system. Asterisk is a complete IP PBX in software.
BakAndImgCD is a small Linux-based operating system, which has been designed to perform the following two tasks: data backup (the supported filesystems are: btrfs, ext2, ext3, ext4, FAT, HFS, HFS+, jfs, Minix, NTFS, ReiserFS, and XFS) and disk imaging (using Partimage, Partclone and GNU ddrescue).
BitKey is a self-contained read-only CD/USB stick with everything you need to perform highly secure air-gapped Bitcoin transactions. Offline cold storage made practical.
ConnochaetOS is a distribution for old computers, starting from a computer with a 586 processor, 64 MB RAM, and a 2 GB HD drive.
Distributed Computing Linux (DCLinux) is a small 512MB USB Linux distribution (for use with USB stick flash drives) based on stripped-down Debian Lenny, and has BOINC client installed. Its main purpose is to ease the setup of a dedicated DC machine (often disk-less, bare bones, case-less computers bought solely for the purpose of crunching DC projects) to participate in distributed computing projects.
deepOfix Mail Server
The deepOfix Mail Server makes it possible for organisations with minimal technical expertise to have robust server infrastructure.
deepOfix Messaging Server
The deepOfix Messaging Server is a mail server product aimed at simplying the setup and maintenance of GNU/Linux-based mail server solutions. deepOfix offers unprecented ease of use and doesn't require prior GNU/Linux experience. deepOfix features LDAP-based directory services for user account managemet, email delivery, distribution lists, and addressbooks. It also includes built in tools for spam and virus control, webmail, and email fetching.
A Red Hat/Fedora-based Linux distribution for providing secure and user-friendly PCs to the public. Intended for libraries, schools, kiosks, Internet Cafes, business centers.
DoudouLinux is a system targeting children. It aims at making computer use as simple and pleasant as possible for them while making computers accessible to all children on earth, without any discrimination. Designed as a LiveCD, parents can let children play without worrying about damaging their data or system. It provides tens of kid-oriented applications as well as an efficient web page filtering system. It is currently available in 15 languages.
Game Drift Linux
Game Drift Linux is a Linux distribution based on Ubuntu Linux. Game Drift has been optimized to deliver to you the best possible gaming experience on Linux.
IprediaOS is a fast, powerful and stable operating system based on Linux that provides an anonymous environment. All network traffic is automatically and transparently encrypted and anonymized.
JackLab Audio Distribution
A remastered openSUSE for musicians, producers and media creators. JAD will be fully compatible with the recently released openSUSE 10.2. It will contain a full production environment for media production, primarily music. For this, the JackLab team added a Realtime Kernel version 2.6.19 to have fast audio processing with a latency up to 1.5ms.
Jolicloud is a Linux-based operating system tweaked for netbooks and other computers with limited disk storage, memory, and screen size
From the creators of BackTrack comes Kali Linux, an advanced and versatile penetration testing distribution ever created.
Kevux is an operating system based mainly on GNU operating programs and a Linux kernel, all compiled with uclibc instead of the more common glibc. It is not FHS or LSB compatible. Compared to other Linux distributions, Kevux is space efficient (making it suitable for USB disk operation) and difficult to hack into.
Lin4Neuro is a customized Linux distribution ready for neuroimaging analysis.
LinHES (Linux Home Entertainment System) is a Linux distribution that centers around MythTV.
The goal of this project is to make creating and maintaining a Home Theater PC as simple as possible. A blank system can be transformed to a fully functional HTPC in around 20 minutes.
A Linux distribution where all programs are written in Perl. The only compiled code in this Perl/Linux system is the Linux Kernel (not currently built with this project), Perl, and uClibc.
Privatix Live-System is a portable encrypted operating system designed to be run directly from a USB flash drive or an external hard drive.
QEMU-Puppy is an OS and a set of applications on a USB memory stick. This OS can be booted natively or on top of another already installed OS. Just borrow a PC, boot your own environment, and return the PC unaffected.
Sugar on a Stick
Sugar on a Stick is a Fedora-based operating system featuring the award-winning Sugar Learning Platform and designed to fit on an ordinary USB thumbdrive ("stick").
Vinux is a remastered version of the Ubuntu Linux Distribution optimised for visually impaired users. It provides a screen-reader, full-screen magnification and support for Braille displays out of the box!
Webconverger is kiosk software to get you onto the Open Web. It is based on Debian stable and uses latest Firefox stable releases.