There is an Apophysis7x for Mac, Windows and Linux from Xyrus, it's Free

http://apophysis.xyrus-worx.org/

Ultra Fractal has a Mac version too, you have t buy it though. There is an App, I can't remember the name of it at the moment, strictly for Mac that looks very cool, I'll try to find it again to get a link for you.

 

Mandelbulber has a version for Mac I believe and Mandelbulb3D will run on MAC if you run it under the WINE Emulator.

 

 

Remember...No matter where you go there you are