Windows 7

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 …

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 …

Paragon Backup & Recovery Free Edition gives you the ability to make a backup of your disk/partition, plus the ability to restore it later. The hot process options using Microsofts …

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 …

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 …

"A Firefox OS with an App Store - The desktop has never been this easy -- Get your favorite web browser with a simple web-based interface on top" xPUD is …

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

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

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

Zorin OS is a multi-functional operating system designed specifically for Windows users who want to have easy and smooth access to Linux. It is based on Ubuntu which is the …

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 …

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 …

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. …

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 …

VENENUX GNU/Linux is a South American desktop distribution based on Debian GNU/Linux and intended primarily for Spanish-speaking users. It adheres strictly to the principles of free software as defined by …

Windows Millennium Edition, also know as Windows ME, is the last version of Windows based in MS-DOS. It is the successor to Windows 98. Windows ME's business counterpart is Windows …

Linux Deepin (formerly Hiweed GNU/Linux) is an easy-to-use Chinese distribution based on Ubuntu. Its features include pre-configured Chinese applications and tools, such as Chinese input method, the LibreOffice office suite,...