Risc OS is an open-source OS specifically designed to run on the ARM chipset.




Fedora is described as 'Creates an innovative, free, and open source platform for hardware, clouds, and containers that enables software developers and community members to build tailored solutions for their users' and is a leading Linux Distro in the os & utilities category. There are more than 100 alternatives to Fedora for a variety of platforms, including Linux, Self-Hosted, Mac, Windows and BSD apps. The best Fedora alternative is Linux Mint, which is both free and Open Source. Other great apps like Fedora are Ubuntu, Debian, Arch Linux and openSUSE.
Risc OS is an open-source OS specifically designed to run on the ARM chipset.




RetroBSD is a port of 2.11BSD Unix intended for embedded systems with fixed memory mapping. The current target is Microchip PIC32 microcontroller with 128 kbytes of RAM and 512 kbytes of Flash.
ExectOS aims to be a stable and flexible, general purpose operating system written from scratch. It is designed to be modular, maintainable and compatible with existing software. It implements a brand new XT architecture and features own native application interface.
AmigaOS is the proprietary native operating system of the Amiga and AmigaOne personal computers, introduced with the launch of the first Amiga, the Amiga 1000, in 1985.




Darwin is the Open Source operating system from Apple that forms the basis for Mac OS X, and PureDarwin is a community project to make Darwin more usable (some people think of it as the informal successor to OpenDarwin.

GNU-Darwin aims to be the most free software distribution. Our mission is two-fold: Focus on projects that leverage our unique combination of Darwin and GNU, and help users to enjoy the benefits of software freedom.



Visopsys (VISual OPerating SYStem) is an alternative operating system for PC-compatible computers, written “from scratch”, and developed primarily by a single hobbyist programmer since 1997.








Vinux is a Ubuntu derived distribution optimised for the needs of blind and partially sighted users. By default Vinux provides two screen-readers, Braille display support and an extremely friendly community.
Turkman Linux is a independent GNU/Linux distribution. It uses its own YMP (Yerli ve Milli Package) manager. Turkman Linux is a distribution originating from Turkiye. 🇹🇷.
MicroPythonOS is a lightweight, fast, and versatile operating system designed to run on microcontrollers like the ESP32 and desktop systems. With a modern Android-like touch screen UI, App Store, and Over-The-Air updates, it’s the perfect OS for innovators and developers.



