5 ms·

All of the BSDs.

• pjmlp 11y ago
  Which of them is certified as such?
  • groovy2shoes 11y ago
    Oh, didn't realize you meant only certified Unices. I'll be on my way...
  • curt15 11y ago
    Who really cares about whether something is "certified" UNIX? Certification is not some seal of quality. "Unix" is commonly understood to denote "functional" unix systems as well for lack of a more convenient term.
    • pjmlp 11y ago
      That os what the UNIX-like expression is for.
  • mitchty 11y ago
    OS X would have been the only one certified. Even then I wouldn't call it a BSD per-se.