Similar to RISC_OS
RISC OS
RISC OS
MINIX
Minix
386BSD
386BSDApache Mynewt
Apache MynewtArch Hurd
Arch HurdAROS Research Operating System
AROS Research Operating SystemAtheOS
AtheOS
Berkeley Software Distribution
Berkeley Software Distribution
ChibiOS/RT
ChibiOS/RTCollapse OS
Contiki
ContikiCP/M
CP/MCP/M-68K
CP/M-8000
CP/M-86
CP/M-86
Darwin (オペレーティングシステム)
Darwin (operating system)
ECos
ECosEmuTOS
EmuTOSEyeOS
EyeOS
FreeDOS
FreeDOSFreeRTOS
FreeRTOSFuchsia (オペレーティングシステム)
Fuchsia (operating system)Genode
Genode
GNU
GNU
GNU Hurd
GNU HurdGNUの派生
GNU variantsHelenOS
HelenOSInferno (オペレーティングシステム)
Inferno (operating system)
