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.



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, BSD, Windows and Mac apps. The best ReactOS alternative is Linux Mint, which is both free and Open Source. Other great apps like ReactOS are Fedora, Arch Linux, Zorin OS and Proton.
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.



Kaisen Linux is a distribution for IT professional based on the Debian GNU/Linux distribution. It is a complete operating system whose originality is to provide a set of tools dedicated to system administration and covering all the needs for diagnosing and dealing with faults or...




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.




Athena OS is an Arch-derived Linux distribution designed for penetration testing, bug-bounty hunting and InfoSec students. The distribution provides a way to connect directly to some of the e-learning hacking resources, such as Hack The Box, Offensive Security, PWNX and InfoSec...



EasyOS is an experimental Linux distribution that uses many technologies and package formats pioneered by Puppy Linux .


ravynOS is a new open-source desktop operating system that aims to provide a similar experience and compatibility with macOS on x86-64 systems.


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...




CrunchBang++ is an open source and completely free [of cost (#!++ does include several of Debian’s non-free packages as well as the non-free repository)] computer operating system, designed as a continuation of the .




Dragora GNU/Linux is a distribution created from scratch with the intention of providing a stable, multi-platform and multi-purpose operating system. It is built upon 100% free software. It has a very simple packaging system that allows installing, removing, upgrading and...


