Is there a good program that runs on Mac OSX, which has a graphical interface for inputting knot or link diagrams, and calculates standard invariants like the Conway and Jones polynomials?
I have been using the Mathematica knot theory package pioneered by Dror Bar-Natan, but it doesn't do graphical entry, and I want to move away from Mathematica which is expensive, and I can't expect my students to buy. I have also used Hoste and Thistlethwaite's knotscape program, which is a unix program, and I suppose that it might be installable on OSX, since OSX is basically unix underneath, but I'm not enough of a computer guru to figure out how to do that. I was hoping someone has developed a program that runs right on OSX, but if not, I'll try to see if I can get knotscape to work.