5MD works on Macs, didn't test the others though.

Edit: Some small glitches, when in a game and you try to select a class load out the class icons will be invisible until you mouse over them.

Edit 2: Also in tournament mode (tested on a dodgeball server) in the top left where I assume it'd show players left it shows a red and a blue %%.

Edit 3: I have a glitch that I think it just an issue with fonts on Macs. The main menu text is cut off, it's still readable just annoying. Tested on 16:10. 16:9, and 4:3 aspect ratios.

I don't know if this is the place to post this but are you planning on trying to fix the Mac version?