FreeBSD

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 …

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 …

Slackware Linux is an advanced Linux operating system, designed with the twin goals of ease of use and stability as top priorities. Including the latest popular software while retaining a …

Sabayon is a Gentoo-based GNU/Linux Operating System designed for speed and ease of use. With the ability to use Gentoos Portage or Sabayons own Entropy system, the ability to compile …

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 …

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 …

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.

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 …

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 …

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

What's Windows PE (WinPE)? It's a small operating system used to install, deploy, and repair Windows. From Windows PE, you can: Set up your hard drive before installing Windows. Install …

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 …

Mageia is a fork of Mandriva Linux formed in September 2010 by former employees and contributors to the popular French Linux distribution. Unlike Mandriva, which is a commercial entity, the …

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 …

NetBSD is a free, fast, secure, and highly portable Unix-like Open Source operating system. It is available for a wide range of platforms, from large-scale servers and powerful desktop systems …

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 …

Pardus is a GNU/Linux distribution funded and developed by the Scientific & Technological Research Council of Turkey. Pardus has a range of unique features, such as Mudur, a start-up framework …

Peppermint was designed for enhanced mobility, efficiency and ease of use. While other operating systems are taking 10 minutes to load, you are already connected, communicating and getting things done. …

The purpose of Pear Linux is to create an operating system based on Linux (Ubuntu mini remix) and propose a simple but powerful interface. Pear Linux is free (thanks to …

Zenwalk Linux (formerly Minislack) is a Slackware -based GNU/Linux operating system with a goal of being slim and fast by using only one application per task and with focus on …

Windows 95 was the one of the biggest steps in terms of ideals of how should an OS work and what appearence should follow.

UTUTO GNU/Linux is a Gentoo Linux -based distribution developed by at the Universidad Nacional de Salta in Argentina. Named after a fidgety local lizard that pokes its nose into every …