1) A Mac version.
2) A Mac version.
3) A Mac version.
I am a physics instructor at a two-year college. All the computers in the Science Study Center at our school, are Macs. 65% of my students own Mac laptops. My home computer is a Mac. All of my physics colleagues use Macs. If my students could access Mathcad from the school computers, I would incorporate it into my classes in half a heartbeat.