STL to gCode?

Besides Easel, what are some other open source solutions to converting STL to gCode that people are using? My old CNC machine, I used PyCam, but surely there are others out there that are good/better. Thanks.

Will

not open source but usually much faster than PyCam:

Things seem to be pretty limited as far as opensource STL -> G-code. pyCAM, and HeeksCNC (though they sell the Windows version) are the prime candidates.

List of all the opensource and free options here: http://www.shapeoko.com/wiki/index.php/CAM#3D