Community-led Proof-of-Concept for a common free Operating System for the EU public sector.

ReactOS is described as '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)' and is a very popular operating system in the os & utilities category. There are more than 100 alternatives to ReactOS for a variety of platforms, including Linux, Self-Hosted, Windows, BSD and Mac apps. The best ReactOS alternative is Linux Mint, which is both free and Open Source. Other great apps like ReactOS are Arch Linux, Fedora, Manjaro Linux and openSUSE.
Community-led Proof-of-Concept for a common free Operating System for the EU public sector.

Xinuos OpenServer™ 10 is a 64-bit operating system based on the popular FreeBSD and designed to support business applications within an enterprise environment.
CRUX is a lightweight GNU/Linux distribution for the x86-64 architecture targeted at experienced users. The primary focus of this distribution is keep it simple, which is reflected in a straightforward tar.



Neptune is a GNU/Linux Distribution for desktops based fully upon Debian Stable. It ships with a modern KDE Plasma Desktop with its main view on a good looking multimedia system which allows for getting work done.




Korora is an installable Fedora Remix Live USB image which aims to provide a complete out of the box experience for new users, including support for multimedia.


ROSA Linux is a Linux operating system and distribution, developed by Russian company LLC NTC IT ROSA. It is available in three different editions: ROSA Desktop Fresh (GNOME and KDE), ROSA Enterprise Desktop, and ROSA Enterprise Linux Server.


Spatry's remix of Manjaro Linux! It comes with the XFCE desktop, lots of themes and a complete software set designed to give you an enjoyable user experience.




The ubermix is an all-free, specially built, Linux-based operating system designed from the ground up with the needs of education in mind.



Fatdog64 Linux is a small yet versatile 64-bit multi-user Linux distribution. built to run on virtually any computer with a 64-bit architecture.


GNU-Darwin 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.



dahliaOS is a modern, secure, lightweight and responsive operating system, combining the best of GNU/Linux and Fuchsia OS.


Ubuntu Cloud is an open source Linux operating system designed to be used as a personal cloud server. It is based on the well known Ubuntu Linux distribution and recognized as an official Ubuntu flavor, distributed by Canonical.