Post processing for Mac?

I am currently setting up/learning the post processing for Mac and I am unable to figure it out. Is this a windows only file download? I do have 2 laptops I am working with. (1) Mac for design (1) windows for the Mach3. any suggestions?

I do the same thing you do, using mac for design and post and an old windows for mach 3. I have no problems at all following the langmuir videos and then just saving the .tap files on a flash drive and plugging it into mach on the windows.

Thank you for you help I think I got it now