---
title: Alternative Operating Systems
---

This is a collection of operating system projects that are drastically different than the Linux, MacOS, and Windows standard.

* [AROS](https://github.com/aros-development-team/AROS)
* [CollapseOS](http://collapseos.org/)
* [FreeDOS](https://www.freedos.org/)
* [Haiku](https://www.haiku-os.org/)
* [Illumos](https://www.illumos.org/projects/)
* [KISS Linux](https://kisslinux.org/)
* [Morphos](https://www.morphos-team.net/)
* [Menuetos](http://www.menuetos.net/)
* [Mezzano](https://github.com/froggey/Mezzano)
* [Node-OS](https://node-os.com/)
* [Plan 9 from Bell Labs](https://plan9.io/plan9/)
* [Plan9 Foundation](https://plan9foundation.org/)
* [9Front - Plan9 fork](https://9front.org/)
* [9p Zone](http://9p.zone/)
* [PonyOS](https://www.ponyos.org/)
* [ReactOS](https://reactos.org/)
* [RISCOS](https://www.riscosopen.org/content/)
* [SerenityOS](https://serenityos.org/)
* [Source Mage Linux](http://sourcemage.org/)
* [Tinycore Linux](http://tinycorelinux.net/)
* [The Ares Operating System](https://ares-os.org)
* [TempleOS](https://templeos.org/)
* [ShrineOS](https://github.com/minexew/Shrine)
* [ZealOS](https://github.com/Zeal-Operating-System/ZealOS)