Haiku is described as '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' and is a very popular operating system in the os & utilities category. There are more than 100 alternatives to Haiku for a variety of platforms, including Linux, Self-Hosted, BSD, Windows and Mac apps. The best Haiku alternative is Linux Mint, which is both free and Open Source. Other great apps like Haiku are Ubuntu, Debian, Fedora and Arch Linux.
Chromium OS is an open-source project, used primarily by developers, that aims to build an operating system that provides a fast, simple, and more secure computing experience for people who spend most of their time on the web.
A privacy-focused, AI-ready Debian system featuring the shadow and gold Umbra theme, KDE Plasma 6, preinstalled creative, audio, and 3D tools, agent workspaces for secure local AI, robust updates and recovery controls, browser migration, and strong local-first security.
United States
Ubuntu Kylin is an official Ubuntu subproject whose goal is to create a variant of Ubuntu that is more suitable for Chinese users using the Simplified Chinese writing system.
China
The Temple Operating System (TempleOS) is a free and open source, x86_64, non-preemptive, multi-tasking PC operating system.
United States
Vinix is an effort to write a modern, fast, and useful operating system in the V programming language.
Lithuania
EU
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.
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.
SparkyLinux is a Debian-based Linux distribution which provides ready to use, out of the box operating system with a set of slightly customized lightweight desktops.
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...
United States
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.
KolibriOS is a tiny yet incredibly powerful and fast operating system. This power requires only a few megabyte disk space and 8MB of RAM to run. Kolibri features a rich set of applications that include word processor, image viewer, graphical editor, web browser and well over 30...
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.
United States
