RISC-V 
ARM és MIPS mellé valami ami nyílt.
(https://www.theregister.co.uk/2018/07/10/arm_riscv_website/
innen: https://www.riscosopen.org/forum/forums/12/topics/11724
https://www.riscosopen.org/forum/forums/9/topics/6756)
Linux, BSD, ReactOS, MenuetOS, Haiku-OS, Syllable... Van még több is! distrowatch.com/
