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Juniper Networks (the Junos operating system for their switches/routers) and Sony Interactive Entertainment (PlayStation 3 and PlayStation 4 operating systems)
by 0xcde4c3db 10y ago
Juniper Networks (the Junos operating system for their switches/routers) and Sony Interactive Entertainment (PlayStation 3 and PlayStation 4 operating systems) are the major ones I know of, both forking FreeBSD.