"You can take my Mac when you pry it from my cold dead hands."

There are plenty of programs that you can use with a Mac. Hell, Poser STARTED on a Mac. Some tools for creation are Windows only, and the only thing I've ever seen Poser release that wasn't fully Windows and PC compatible is the Kinect  attachment in Pro Game Dev and that's a Windows product.

So no you shouldn't need any extra tools or anything  from using Poser on a Mac. Unless you use DAZ products cause I'm pretty sure DAZ hates Mac users. Yeah, that's just my opinion, mind you, but it is based on my 15 years worth of experience buying stuff, or rather, not being able to buy certain stuff, from DAZ.