Well yes AAT is a Windows program, but we have quite a few users who run it quite successfully on Mac's using WINE for OSX, Parallels or VMWare, etc & running AAT on a PC & linking via a LAN works well too.
I do a lot of the beta testing & use PC & Mac computers connected via a LAN.
We are very aware many media professionals love Mac's, (for some it's their religion) so we can read & write Mac-centric files. Eg handle old (pre OSX) formats like PT5 & media in SD2 format that used the concept of Data & Resource forks central to the way Mac's worked, pre OSX. And cope with files without a file ext, that is important to PC's.
Me I'm a bit more familiar with PC's so find Mac OS nice at times but often hard work. But I'm an OS Agnostic at heart & don't understand OS bigotry, they're both just computer OS's.
BTW the reason we support pro Tools pt5 (with separate PC & Mac vers) is because it offers Way more 'detail' than OMF or AAF can do. Now we can also convert to PTF which unlike pt5 is cross platform compatible IE it's the same file for either PC's or Macs.
John L, AATranslator London