Edubuntu is an Ubuntu-based operating system that's designed for educational use in schools and other educational institutions.

OpenBSD is described as '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' and is a popular operating system in the security & privacy category. There are more than 100 alternatives to OpenBSD for a variety of platforms, including Linux, Self-Hosted, BSD, Mac and Windows apps. The best OpenBSD alternative is Linux Mint, which is both free and Open Source. Other great apps like OpenBSD are Ubuntu, Debian, Fedora and Arch Linux.
Edubuntu is an Ubuntu-based operating system that's designed for educational use in schools and other educational institutions.

Redox is a Unix-like Operating System written in Rust, aiming to bring the innovations of Rust to a modern microkernel and full set of applications.




AOSC OS is the Linux distribution project of AOSC.
AOSC OS is built independently, with some reference from some of the greatest Linux distributions from all over the world, namely Fedora, Arch Linux and Debian, etc. The system was initially built with bits and parts from the Li.
NixBSD is an attempt to make a reproducible and declarable BSD, based on NixOS. Although theoretically much of this work could be copied to build other BSDs, all work thus far has been focused on building a FreeBSD distribution.
Regolith Linux is a distro for people that prefer a spartan interface with polished and consistent system management. It brings together a trifecta of Ubuntu’s ubiquity, i3 -wm’s efficient and productive interface, and Gnome’s system...




AnduinOS is a custom Ubuntu-based Linux distribution that aims to facilitate developers transitioning from Windows to Linux by maintaining familiar operational habits and workflows.




antiX is a fast, lightweight and easy to install systemd-free Linux live CD distribution based on Debian Stable for Intel-AMD x86 compatible systems.


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.




BunsenLabs Linux is a distribution offering a light-weight and easily customizable Openbox desktop. The current release is Helium, built on top of Debian (stable). The project is a community continuation of CrunchBang Linux.



Knoppix is an operating system based on Debian designed to be run directly from a CD / DVD (Live CD) or a USB key (Live USB), one of the first of its kind for any operating system. When starting a program, it is loaded from the removable medium and decompressed into a RAM drive.



