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).




GNU-Darwin is described as 'Aims to be the most free software distribution. Our mission is two-fold: Focus on projects that leverage our unique combination of Darwin and GNU, and help users to enjoy the benefits of software freedom' and is a operating system in the os & utilities category. There are more than 100 alternatives to GNU-Darwin for a variety of platforms, including Linux, Self-Hosted, BSD, Windows and Mac apps. The best GNU-Darwin alternative is Linux Mint, which is both free and Open Source. Other great apps like GNU-Darwin are Debian, Fedora, Arch Linux and Manjaro Linux.
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).




Qubes is an open source operating system designed to provide strong security for desktop computing.




Gentoo Linux is a versatile, fast, highly configurable and completely free Linux and FreeBSD distribution geared towards developers and network professionals.



NixOS is a GNU/Linux distribution that aims to improve the state of the art in system configuration management. In existing distributions, actions such as upgrades are dangerous: upgrading a package can cause other packages to break, upgrading an entire system is much less...


Lubuntu is a fast and lightweight operating system with a clean and easy-to-use user interface. It is a Linux system, that uses the minimal desktop LXDE/LXQT.




Experience the latest Windows OS with a new Start menu, integrated Teams, and gaming technologies like Auto HDR. Improved security with stricter requirements enhances protection, and seamless Microsoft Account integration makes it ideal for modern devices.




CentOS is a community-supported, free and open source operating system based on Red Hat Enterprise Linux. It exists to provide a free enterprise class computing platform and strives to maintain 100% binary compatibility with its upstream distribution.




Raspberry Pi OS (previously called Raspbian) is the Foundation’s official supported operating system. You can install it with NOOBS or download the image below and follow our installation guide.


Haiku is an open-source operating system that specifically targets personal computing. Inspired by the BeOS, Haiku is fast, simple to use, easy to learn and yet very powerful.




Puppy Linux is a unique family of Linux distributions meant for the home-user computers. It was originally created by Barry Kauler in 2003.


Alpine Linux is a security-oriented, lightweight Linux distribution based on musl libc and busybox.
