RISC OS
Risc OS is an open-source OS specifically designed to run on the ARM chipset.
4 Alternatives To RISC OS
Fedberry
FedBerry is a Fedora Remix specifically built for use with Raspberry Pi® 2/3 Model B computers.
OpenELEC
OpenELEC, which stands for Open Embedded Linux Entertainment Center, is a Linux operating system that makes the host computer a Kodi media center. The software was the winner of the Swiss Opensource Award in 2014.
Raspbian
Welcome to Raspbian. Raspbian is a free operating system based on Debian optimized for the Raspberry Pi hardware. An operating system is the set of basic programs and utilities that make your Raspberry Pi run.
Xubuntu
Xubuntu – Xubuntu is an elegant and easy-to-use operating system. Download XubuntuXubuntu – Xubuntu is an elegant and easy-to-use operating system. Feature Tour.