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

Ubuntu Server is described as 'The leading platform for scale-out computing, Ubuntu Server helps you make the most of your infrastructure. Whether you want to deploy an OpenStack cloud, a Hadoop cluster or a 50,000-node render farm, Ubuntu Server delivers the best value scale-out performance available' and is a operating system in the os & utilities category. There are more than 100 alternatives to Ubuntu Server for a variety of platforms, including Linux, Self-Hosted, BSD, Windows and Mac apps. The best Ubuntu Server alternative is Debian, which is both free and Open Source. Other great apps like Ubuntu Server are Fedora, Tails, Zorin OS and openSUSE.
Community-led Proof-of-Concept for a common free Operating System for the EU public sector.

Oracle Solaris is the #1 enterprise OS, delivering breakthrough high-availability, security, efficiency, and industry-leading scalability/performance.

ALT Linux is a set of RPM-based, APT-managed operating systems built on top of the Linux kernel and Sisyphus package repository branches. ALT Linux Rescue is, well, the disaster recovery tool.




Amazon Linux 2 is a Linux operating system from Amazon Web Services (AWS). It provides a security-focused, stable, and high-performance execution environment to develop and run cloud applications. Amazon Linux 2 is provided at no additional charge.
100% Fedora-compatible Linux distribution with stable updates, open-source packages, out-of-the-box tweaks, and enhanced setup for developers and everyday users, streamlining software creation, packaging, and immediate usability across all experience levels.



Debian-based Linux OS emphasizing beauty and efficiency. Uses KDE Plasma 5, AppImages, and OpenRC instead of systemd. Integrated with Maui Apps and Liquorix kernel for high responsiveness. Includes Firefox, NX Software Center, comprehensive app suite, and hardware probing.




A purely functional package manager and an advanced distribution of the GNU operating system developed by the GNU Project—which respects the freedom of computer users.




Oracle Linux is a 100% binary compatible RHEL rebuild (just like CentOS) with many advantages: less delays between updates and security fixes to be available and BTRFS support.

NethServer is an application manager for Linux servers. The product's main feature is the ability to easily and quickly install and manage instances of applications over multiple nodes. It allows users to deploy services, like [Nextcloud](https://alternativeto.




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.


SliTaz is a free operating system, working completely in RAM and booting from removable media such as a CD-ROM or USB key. SliTaz is distributed as a LiveCD, and weighs less than 40MB. The system is quick and responsive, clean and robust.


Ubuntu Server is a generic server - it can be almost any form of server. Windows Server 2012 is a superb internet server, able to perform nearly any internet-focused task.