Continuing the discussion from Release date?:
There actually are UV mapping controls in Mac Rhino like those found in Rhino 4 on Windows. Check out the commands beginning with Apply like ApplyPlanarMapping and then use MappingWidget to see and edit the mapping. Another command that is helpful is MatchMapping. All of this is lacking a UI however so it’s understandable to not know it’s there.
What UV tools do you want to see in Mac Rhino? The exact same as Rhino 5 for Windows or do the primitive options from v4 work for what you need?