ToaruOS has an ARMv8 port: https://github.com/klange/toaruos https://github.com/klange/toaruos and Serenity has an ARM and RISC-V ports: https://github.com/Sere

ToaruOS has an ARMv8 port: https://github.com/klange/toaruos https://github.com/klange/toaruos and Serenity has an ARM and RISC-V ports: https://github.com/SerenityOS/serenity https://github.com/SerenityOS/serenity ; although I think you would call them Unix-like. Haiku has tier-2 ports to ARM, RISC-V, and SPARC: https://www.haiku-os.org/guides/building/port_status https://www.haiku-os.org/guides/building/port_status ReactOS has an ARM32 port but the ARM64 one is not usable yet. Skift apparently runs on ARM and RISC-V: https://skiftos.org/ https://skiftos.org/