Ooh new historical Unix variant I had never heard of.. neat!
AIX is still supported and sold, so quite current?
Some that I used that are gone... Ultrix (MIPS), Clix, Irix, SunOS 4, SCO OpenServer, TI System V.
https://en.wikipedia.org/wiki/Ultrix
https://en.wikipedia.org/wiki/Intergraph
alt Hacker News
AIX is still supported and sold, so quite current?
Some that I used that are gone... Ultrix (MIPS), Clix, Irix, SunOS 4, SCO OpenServer, TI System V.
https://en.wikipedia.org/wiki/Ultrix
https://en.wikipedia.org/wiki/Intergraph