Similar to Ultrix

Berkeley Software Distribution

BSD libc

Comparison of BSD operating systems

BSD Daemon

BSD licenses

386BSD

ALTQ

Ar (Unix)

AudioOS

BridgeOS

BSD/OS

C shell

Computer Systems Research Group

Contiki

Darwin (operating system)

GNU-Darwin

IOS

IOS 10

IOS 11

IOS 12

IOS 13

IOS 14

IOS 15

IOS 16

IOS 17

IOS 18