Top 20 Linux Distros

Ubuntu:
The Ubuntu OS powers millions of desktops, netbooks and servers around the world. And it comes with thousands of free apps. DOWNLOAD

Trinity Rescue Kit:
This distro aims specifically at recovery and repair operations on Windows machines, but is equally usable for Linux recovery issues. DOWNLOAD

Clonezilla:
This allows you to do bare metal backup and recovery. Two types of Clonezilla --Clonezilla live for for single machine backup and restore and Clonezilla SE Clonezilla live is for massive deployment. DOWNLOAD

GeeXboX:
GeeXboX ISOs are ready-to-burn disc images containing the bootable GeeXboX Operating System for multimedia entertainment. DOWNLOAD

Adios:
The objective of the ADIOS project is to quickly and easily download a consistent operating system environment onto laboratory PCs. DOWNLOAD

Openwall GNU/Linux:
This is a small security-enhanced Linux distribution for servers, appliances, and virtual appliances. DOWNLOAD

KNOPPIX:
Knoppix is a bootable CD can be used as a Linux demo, educational CD, rescue system, or adapted and used as a platform for commercial software product demos. DOWNLOAD

Devil-Linux:
This boots and runs completely from CDROM or USB flash drive. The configuration can be saved to a floppy diskette or a USB pen drive. Devil-Linux can also be used as a server for many applications. DOWNLOAD

Feather Linux:
Feather Linux runs completely off a CD or a USB pendrive and takes up under 128MB of space. It is a Knoppix remaster (based on Debian), and tries to include software which most people would use every day on their desktop. DOWNLOAD

Untangle Gateway: 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.DOWNLOAD

Fedora:
Fedora is a popular Linux OS, that provides a collection of software that makes your computer run. You can use Fedora in addition to, or instead of, other operating systems such as Microsoft Windows or Mac OS X. DOWNLOAD

PCLinuxOS:
A user-friendly Linux distro 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. DOWNLOAD

Debian:
A free OS for your computer that uses the Linux kernel (the core of an operating system), but most of the basic OS tools come from the GNU project; hence the name GNU/Linux. DOWNLOAD

Ultimate Boot CD:
This allows you to run floppy-based diagnostic tools from CDROM drives and consolidate as many diagnostic tools as possible into one bootable CD. DOWNLOAD

Slax: A modern, portable, small and fast Linux OS with a modular approach and provides a wide collection of pre-installed software for daily use. DOWNLOAD

Puppy Linux:
One of the most amazing features of Puppy is the range of powerful applications yet such tiny size .and the speed. DOWNLOAD

LinuxMint:
This is an Ubuntu-based distro 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. DOWNLOAD

OpenDiagnostics Live CD:
This OpenDiagnostics Live CD was created a few years back when this guy named Brandon Perry thought it would be awesome to be able to scan computers on the fly regardless of the OS. DOWNLOAD

Vyatta Core:
Vyatta commercial customers get access to exclusive subscription-only features, proactive notifications of security alerts, software releases, patches & bug fixes. DOWNLOAD

Parted Magic:
Parted Magic is a small live CD/USB/PXE with its elemental purpose being to partition hard drives. DOWNLOAD