Interesting FOSS OS that aren't Windows® or GNU/Linux

This list contains #FOSS operating systems that I find interesting. (yes, Windows® is not FOSS, everybody knows that)

"Windows®" refers to every Windows/NT #OperatingSystem owned by Microsoft, like XP and 7. React OS wants to be compatible with the Windows/NT API to a binary level but it is not a property of Microsoft.

GNU/Linux is Linux combined with software such as x11/wayland and gtk/KDE. Arch, fedora and Ubuntu are GNU/Linux but Lineage OS isn't.

lounes-tbList by lounes-tb, last updated 2021-03-31
  1. Haiku icon

    Haiku is an 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.

    • ...
    Haiku screenshot 1
  2. hello System icon

    Desktop system for creators with focus on simplicity, elegance, and usability. Based on FreeBSD. Less, but better!

    • ...
  3. ReactOS icon

    ReactOS™ is an Open Source effort to develop a quality operating system that is compatible with applications and drivers written for the Microsoft® Windows™ NT family of operating systems (NT4, 2000, XP, 2003, Vista, Seven).

    • ...
    ReactOS screenshot 1
  4. FreeDOS icon

    FreeDOS is a complete, free, 100% MS-DOS compatible operating system. Works on old hardware, in DOS emulators, and in embedded systems.

    • FreeOpen Source
    • Windows
    • Linux
    • ...
    FreeDOS screenshot 1
  5. LineageOS icon

    A free and open-source operating system for smartphones and tablet computers, based on the Android mobile platform. It is the successor to the highly popular custom ROM CyanogenMod, from which it was forked in December 2016 when Cyanogen Inc.

    • Mobile OS
    • FreeOpen Source
    • Android
    • Android Tablet
    • ...
    Notification Shade
  6. Redox icon

    Redox is an operating system written in Rust, a language with focus on safety, efficiency and high performance. Redox, following the microkernel design, aims to be reliable, secure, usable, correct and free.

    • ...
    Redox OS running COSMIC Editor
  7. FreeBSD icon

    FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms. A large community has continually developed it for more than thirty years. Its advanced networking, security, and storage features have made FreeBSD the platform of choice for many of...

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    FreeBSD screenshot 1
  8. AROS icon

    The AROS Research Operating System is a lightweight, efficient, and flexible desktop operating system, designed to help you make the most of your computer. It's an independent, portable and free project, aiming at being compatible with AmigaOS at the API level (like Wine...

    • ...
    AROS screenshot 1
  9. Serenity OS icon

    Serenity is a graphical 32-bit Unix-like operating system with 90s aesthetics and built for x86 systems.

    • ...
    Serenity OS screenshot 1

This list was created by lounes-tb Oct 29, 2020 and was last updated Mar 31, 2021. The list has 9 apps.

You can create your own lists from our large database of apps either for your own sake or if you want to share some great apps with other people.


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