Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Is Oracle Solaris officially declared UNIX? I want to know all the official UNIX presently available in the market (whether free or paid).

Please correct me if I am wrong: To the best of my knowledge, an operating system must satisfy all the terms and conditions as laid by the owners of "UNIX", The Open Group, to be coined as UNIX. Linux is an UNIX-like kernel almost resembling UNIX but still open-source and free to distribute.

share|improve this question
I'll never get used to ‘Oracle’ appearing in front of Solaris. – Alexios May 18 '12 at 13:55

You can find that information on The Open Group's website, namely in the Register of Certified Products page.

Yes, Oracle Solaris is listed there.

You should check out this question: Is Linux a Unix? for some interesting info on what UNIX & Unix are, and their relation to Linux and other systems.

share|improve this answer

When Sun was an independent company, it licensed System Vr4 Unix from Novell. I know that Groklaw excoriated Sun for semi-playing-along with SCOG during the SCOG "IP" tempest, but Sun already had a license for Unix at the time. So, Solaris is definitely Unix, in a licensing sense, as well as a certification sense.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.