Operating Systems for Windows

The Debian Project is an association of individuals who have made common cause to create a free operating system. This operating system that we have created is called Debian.

A versatile OS with universal app architecture, free initial year offer, redesigned UI for mouse and touch, virtual desktop, and improved security.

ReactOS™ is a FOSS effort to develop a quality operating system based on the architecture of Microsoft® Windows™ NT family of operating systems, that is compatible with applications and drivers written for it (NT4, 2000, XP, 2003, Vista, 7).

The latest Windows update with a redesigned Start menu, Widgets integration, Xbox gaming features, and tighter security requirements, built with modern hardware in mind.

An open and transparent modification of the Windows operating system, designed to optimize performance and latency. AtlasOS is creating a "kinder" Windows experience. Reducing bloatware and optimizing performance for enthusiasts, gamers, and privacy-conscious individuals.

ReviOS aspires to re-create what Windows as an operating system should have been - easy and simple.

SteamOS 3 (Holo) archiso configuration.

Armbian is a base operating system platform for single board computers (SBCs) that other projects can trust to build upon.

Windows X-Lite's Optimized Windows Builds are designed to Enhance Performance, Privacy, Stability and Control, and work with all Apps and Games on all PCs. Old or New, Weak or Strong, Desktop or Laptop.

OpenThos is a free, open source OS project based on Android-x86, the operating system has Desktop GUI. The source code is available on GitHub. You can choose English Language when attempting to install the OS.

Damn Small Linux is a very versatile 50MB mini desktop oriented Linux distribution.

MINIX is a POSIX-compliant Unix-like operating system based on a tiny microkernel running in kernel mode with the rest of the operating system running as a number of isolated, protected, processes in user mode.

A simplified, focused and open NAS OS that supports all X86-64 hardware.

PikaOS is a gaming focused Linux distribution focussing on ease of use and high compatability. Using the know how from Nobara combined with a Ubuntu base.

illumos is a free and open-source Unix operating system. It derives from OpenSolaris, which in turn derives from SVR4 UNIX and Berkeley Software Distribution (BSD). illumos comprises a kernel, device drivers, system libraries, and utility software for system administration.

Windows Preinstallation Environment (Windows PE, WinPE) is a lightweight version of Windows used for the deployment of PCs, workstations, and servers, or install, deploy, and repair Windows while it is offline.

Barts PE Builder helps you build a BartPE (Bart Preinstalled Environment) bootable Windows CD-Rom or DVD from the original Windows XP or Windows Server 2003 installation/setup CD, very suitable for PC maintenance tasks.

Xinuos OpenServer™ 10 is a 64-bit operating system based on the popular FreeBSD and designed to support business applications within an enterprise environment.

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 around it.

Windows Server 2012, codenamed "Windows Server 8", is the sixth release of Windows Server. It is the server version of Windows 8 and succeeds Windows Server 2008 R2. Two pre-release versions, a developer preview and a beta version, were released during development.

The Zeal Operating System is a modernized, professional fork of the 64-bit Temple Operating System. Guiding principles of development include transparency, full user control, and adherence to public-domain/open-source implementations.

WindowWatcher is a free hybrid window magnifier and remote control spy. It gives Windows the ability to have proper and resizable picture-in-picture support above and beyond Aero Snap. It's great for watching stuff like online TV, streams or Youtube playlists in a small...

Based in Ottawa, Ontario, Canada, BlackBerry QNX has provided foundational software for many of the world’s mission-critical embedded systems since 1982. From nuclear power plants, surgical robots and class III life-critical medical devices to autonomous vehicles and brands like...

With LTSC, customers can delay receiving feature updates and instead only receive monthly quality updates. Features from Windows 10, like Cortana, Edge, and all in-box Universal Windows apps, are also not included.

SpeedLinux is a customized coLinux. coLinux is not a VM but it can be used in the same way. Installation of Speedlinux results in a complete LINUX System with X server running side on side with Windows on a single PC.