Capability-based security
EROS KeyKOS - EROS's predecessor CapROS - EROS's successor Coyotos - EROS's cousin
Cambridge CAP computer
Carnegie Mellon University C.mmp with Hydra operating system
Carnegie Mellon University CM* with StarOS
IBM System/38 and AS/400
Intel iAPX 432
Plessey System 250
Symbian
Amoeba分散オペレーティングシステム