How many different families of operating systems exist in unix?

By Daki - Last updated: Sunday, December 27, 2009 - Save & Share - 3 Comments

freebsd52 How many different families of operating systems exist in unix?
bermuda890 asked:


I know that Mac OS, Linux, Open Solaris, and BSD are related to Unix, are there any other operating systems that are based on or related to unix? Please don’t not include variants of any of that already mentioned operating systems, such as FreeBSD, Or any Linux-based distros.

Also, is there any other family of operating systems separate from Unix?
I guess what I am looking for is an OS which could be run on a modern computer.

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3 Responses to “How many different families of operating systems exist in unix?”

Comment from hands.adrian
Time December 27, 2009 at 9:27 am

many hardware mfgs (both system and chip) have their own (usually not free) unix variant. e.g. aix, hp-ux, xenix, tru64, unicos, etc…

when you say “family of operating systems separate from Unix” would you include things like mainframe os? dead/obsolete os? real-time os?

Comment from Mandar H
Time December 28, 2009 at 2:34 am

To add a few:
HP-UX
Solaris
AIX

Comment from Jim Maryland
Time December 29, 2009 at 6:59 pm

PalmOS (hand helds)
Amiga (think they are still making a niche OS)
VMWare – more of a container, but it could be seen as a specialized OS
Brew (used on cell phones)
VAX
Mainframe
IBM OS2

** Edit **
Not sure why I didn’t just go here in the first place but here is a big list of OSs:

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