A GNU/Linux distribution, that takes all the non-free blobs out of the popular Ubuntu distribution and makes it free.

Ubuntu
gnu
linux
FSF
opensource
distro
Linux-distribution
distribution
Debian
derivative
Xubuntu is a version of Ubuntu that uses XFCE instead of GNOME as a desktop environment. Typically this means you have a older/slower computer, or just want a very efficient desktop OS. Xubuntu can be run with just 1.5 Gigs of hard drive space and 64-128 MB of RAM.
It is similar to Kubuntu in that it is a derivative of Ubuntu for those who do not want to use GNOME.
Xubuntu and Beryl
xfce
Ubuntu
distro
License:GPL
Xubuntu
gnu/linux
linux
Linux-distribution
Debian
derivative
Knoppix STD or Knoppix Security Tools Distribution is a liveCD security Linux Distribution that aims to include as many security tools as possible and expose them all via a slick interface.
Security
linux
LiveCD
Linux-distribution
distro
pentest
Knoppix
License:GPL
knoppix-std
Local Area Security Linux is a security minded linux distribution that runs from a cd, or miniCd as the project aims to be small enough to fit in 180mb.
Security
linux
LiveCD
Linux-distribution
distro
sysadmin
License:GPL
LAS-Linux
PHLAK is a modular livecd security Linux distribution.
PHLAK comes with two light gui’s (fluxbox and XFCE4), many security tools, and a spiral notebook full of security documentation.
PHLAK is a derivative of Morphix, created by Alex de Landgraaf.
Security
linux
LiveCD
Linux-distribution
distro
Morphix
License:GPL
phlak
Libranet is a linux-distribution based on Debian that is designed to be easy to configure.
Tal Libranet announced on June 2006 that he will not continue development on the Libranet project.
LG3D is a 3D windowing and visualization project based on Java technology.
There’s a LiveCD available: LG3D LiveCD.
lg3d
Java
sun
3D
distro
Linux-distribution
gui
desktop
linux
License:GPL
Pocket Linux is an almost minimal, one floppy linux system designed to quickly convert PC workstation into secure linux-based workstation using ssh to connect to remote host (other networking clients are also supported).
It supports bootp for determining host IP and other network parameters (there’s also manual configuration possible, but bootp is recommended).
linux
Unix
Linux-distribution
distro
distros
License:GPL
PocketLinux
Linspire is a commercial Linux distribution and as such charges money for their releases. Parts of it are covered under the GPL but other parts including some code that Linspire has created is not covered under the GPL.
Linspire was once to be called Lindows, except Microsoft took exception to that. A project was started to distribute free binaries of Linspire called ‘Freespire’, however Linspire took exception to that, Freespire become known as SquiggleOS. SquiggleOS eventually shut down however as Linspire promises a community focused distribution also called Freespire.
Software
linux
Linux-distribution
distro
linspire
License:GPL
Knoppix is a liveCD Linux distribution, featuring automatic hardware detection and support for many graphics cards, sound cards, SCSI devices, and other peripherals.
Due to Knoppix’s excellent support for a wide array of hardware and Knoppix being one of the first livecd distributions, Knoppix has virtually become a byword for bootable cd and many derivative distributions have been established based on the work the Knoppix project has done.
Knoppix packages a wide variety of software, the contents of which depends on the version—the full DVD version packaged over 2500 projects. Knoppix, unlike some other linux distributions, packages some proprietary software in addition to free software packages.
Some of the notable packages that Knoppix packages are: KDE, XMMS, Firefox, OpenOffice, K3b, and the GIMP.
Knoppix
linux
Debian
LiveCD
Linux-distribution
distro
License:GPL
Klaus-Knopper
To create a free, enterprise-grade Linux distribution with a long lifespan.
Tao Linux is based off of Red Hat Enterprise Linux.
Monoppix is a LiveCD Linux distribution (based on Knoppix) that shows off Mono technology.
Monoppix includes:
LiveCD
mono
Linux-distribution
distro
Knoppix
License:GPL
monoppix
Xandros Desktop is a Linux desktop linux distro that provides an easy to use operating GeekTime Linux, Xandros Business 3.0 A great new distro!
linux
Debian
Linux-distribution
distro
desktop-Linux
xandros
Momonga Linux is a Linux-distribution developed in a “Bazaar” model style among its user community.
linux
Linux-distribution
distro
momonga
License:GPL
MomongaLinux
GoboLinux is an alternative Linux distribution that redefines the entire filesystem hierarchy. Applications are stored entirely in their own folder for simple management.
GoboLinux
linux
distribution
LiveCD
Linux-distribution
distro
Slackware is the longest-running distribution of the Linux operating system.
Many other linux distributions have since been based on Slackware: VectorLinux, GoblinX, Pocket Linux, Ultima Linux, etc.