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




Pearl OS is described as 'Pearl Linux OS has been available for free download since 12/2014 with our first release simply titled Pearl Linux. It was based on the 14.04 released version of Ubuntu. That release was using the XFCE desktop environment' and is a Linux Distro in the os & utilities category. There are more than 100 alternatives to Pearl OS for a variety of platforms, including Linux, Self-Hosted, BSD, Mac and Windows apps. The best Pearl OS alternative is Linux Mint, which is both free and Open Source. Other great apps like Pearl OS are Ubuntu, Debian, Fedora and Arch Linux.
Risc OS is an open-source OS specifically designed to run on the ARM chipset.




Frugalware Linux is an independently developed general purpose desktop Linux distribution designed for intermediate users. It follows simple Slackware -like design concepts and includes the .

Obarun is a GNU/Linux operating system that relies on s6/66 init and service management suite. The goal of Obarun is to provide an alternative for people looking for more simplicity and transparency in maintaining their systems.


Sourcemage is a source-based GNU/Linux distribution based on a Sorcery metaphor of 'casting' and 'dispelling' programs, which we refer to as 'spells'.



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.
Macpup is a minimalist desktop Linux distribution based on Puppy Linux . It uses Enlightenment as the default window manager and provides a user interface resembling that of Apple's macOS .

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.

Karoshi provides a simple graphical interface that allows for quick installation, setup and maintenance of a network.






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.



BeeFree OS is inspired from Ubuntu, Windows 7 and Linux Mint. The name is acronym for Beautiful, Effective, Efficient and Freedom.




ULinux is based on openSUSE, and is a free linux distribution with the aim of combining the DIY-approach of Arch with the setup of Ubuntu.
