Softwares

DietPi is an extremely lightweight Debian OS, highly optimised for minimal CPU and RAM resource usage, ensuring your SBC always runs at its maximum potential

Chrome OS is the system used on Chromebooks. Download the OS image using a desktop computer https://github.com/FydeOS/chromium_os-raspberry_pi/releases write the image to a microSD card, you can use the Raspberry Pi Imager. https://github.com/openFyde/overlay-rpi4-openfyde

Raspberry Pi OS (formerly Raspbian) is a Unix-like operating system based on the Debian Linux distribution for the Raspberry Pi family of compact single-board computers

Raspbian is an unofficial port of Debian wheezy armhf developped by Mike Thompson and Peter Green

RISC OS is a computer operating system designed in Cambridge, England by Acorn. First released in 1987, its origins can be traced back to the original team that developed the Arm microprocessor

Windows 10 IoT Core was developed by Microsoft for Raspberry Pi users, however, it is important to keep in mind that it is very different from the classic Windows 10.

Windows 11 on ARM Insider Preview is a Preview of Windows 11 in a version intended for ARM architectures.