3 ms·

I think that just leaves AIX and HP-UX of the old commercial unicies.

• pjmlp 9y ago
  There is still macOS as NeXTSTEP derivative.
  • 0x4a42 9y ago
    Mac OS X wasn't there at this time - the classic Mac OS wasn't an Unix like/derivative during the nineties.
    • pjmlp 9y ago
      I wrote NeXTSTEP.
• xeeeeeeeeeeenu 9y ago
  Itanium is dead and there are no plans to port HP-UX to x86. Only AIX is still alive.