Similar to ECos
Arch Hurd
Arch HurdAROS Research Operating System
AROS Research Operating SystemAtheOS
AtheOSBerkeley Software Distribution
Berkeley Software DistributionCollapse OS
Contiki
ContikiCP/M
CP/MCP/M-68K
CP/M-8000
CP/M-86
CP/M-86EmuTOS
EmuTOSEyeOS
EyeOSFreeDOS
FreeDOSGenode
GenodeGNU
GNUGNU Hurd
GNU HurdGNUの派生
GNU variantsHelenOS
HelenOSJX (オペレーティングシステム)
JX (operating system)MiNT
MiNTMS-DOS
MS-DOSPlan 9 from Bell Labs
Plan 9 from Bell LabsPop! OS
Pop! OSReactOS
ReactOS▼-1 trendsRedox (オペレーティングシステム)
Redox (operating system)RISC OS
RISC OSSolus
Solus (operating system)SteamOS
SteamOS