CentOS

Debian is a free distribution of the GNU/Linux operating system. It is distributed with access to repositories containing thousands of software packages ready for installation and use. Debian is known …

Arch Linux is an independently developed, i686- and x86_64-optimised Linux distribution targeted at competent Linux users. It uses pacman, its home-grown package manager, to provide updates to the latest...

The Fedora Project is an openly-developed project designed by Red Hat , open for general participation, led by a meritocracy, following a set of project objectives. The goal of The …

openSUSE is a free and Linux-based operating system for your PC, Laptop or Server. The openSUSE distribution is a stable, easy to use and complete multi-purpose distribution. It is aimed …

FreeBSD is an advanced operating system for x86 compatible (including Pentium® and Athlon™), amd64 compatible (including Opteron™, Athlon™64, and EM64T), ARM, IA-64, PowerPC, PC-98 and UltraSPARC®...

Jolicloud is a new operating system for netbooks. The OS provides a beautiful interface, an application directory and a set of social features that make it easy and fun to …

elementary OS is a free, fast and aesthetically pleasing operating system based on Ubuntu .

Gentoo Linux is a versatile, fast, highly configurable and completely free Linux distribution geared towards developers and network professionals. Gentoo is a rolling release distro (continuously...

Red Hat is the leader in development, deployment, and management of Linux and open source solutions for Internet infrastructure - ranging from embedded devices to secure Web servers. Red Hat …

PC-BSD is a user friendly desktop Operating System based on FreeBSD . Known widely for its stability and security in server environments, FreeBSD provides an excellent base on which to …

The OpenBSD project produces a FREE, multi-platform 4.4BSD-based UNIX-like operating system. Our efforts emphasize portability, standardization, correctness, proactive security and integrated cryptography....

Windows 2000 is the successor to Microsoft's Windows NT. It is primarily designed for business users; its counterpart for home users is Windows ME. Support for Windows 2000 ended in …

Mandriva Linux is a French Linux distribution . Was launched in 1998 under the name of Mandrake Linux, with the goal of making Linux easier to use for everyone. At …

Pinguy OS an out-of-the-box working operating system for everyone, not just geeks This OS is for people that have never used Linux before or for people that just want an …

PCLinuxOS is a free easy to use Linux-based Operating System for desktops or laptops. PCLinuxOS is distributed as a LiveCD, and can also be installed to your computer. Easy to …

SliTaz GNU/Linux LiveCD operating system. "SliTaz is a free operating system, working completely in RAM and booting from removable media such as a cdrom or USB key. SliTaz is distributed …

Hanthana is a Linux based operating system and a Fedora remix suitable for desktop and laptop users. Hanthana comes to you in the form of a Live CD for regular …

Trisquel is a fully free operating system based in GNU/Linux, for home users, small enterprises and educational centers.

OpenSolaris was an open source operating system based on Sun Microsystems Solaris. It was also the name of the project initiated by Sun to build a developer and user community …

The best MS-DOS Windows Operating System released by Microsoft. Nowadays many players of abandonware still miss this rather stable and innovative OS.

The first version of Windows released to market that had a GUI that radically changed the concept of OS.

Scientific Linux is a recompiled Red Hat Enterprise Linux, co-developed by Fermi National Accelerator Laboratory and the European Organization for Nuclear Research (CERN). Although it aims to be fully compatible …

gNewSense is a fully free software GNU/Linux distribution. Free software is software that respects your freedom. You can use it without restrictive licenses, make copies for your friends, school or …

Illumos is a derivative of OS/Net (aka ON), which basically is a Solaris/ OpenSolaris kernel with the bulk of the drivers, core libraries, and basic utilities. It is dependent on …

The Chakra project aims to create a full-featured KDE build with the simplicity of Arch Linux builds. Another aim is to create support in the OS for GTK applications with …