Mathics: A free, open-source alternative to Mathematica
I'm never sure why projects try to claim themselves as a free alternative to Mathematica. For one, they never seem to reach anywhere near the polish and power of Mathematica. And secondly, is Mathematica really that expensive if you use it in your job/industry?For hobbyists, Mathematica is free on a Raspberry Pi, which probably runs better than any alternative, and has a pretty reasonable price point if you buy the real thing for personal use.For students/professors, Mathematica is basically already free at most major universities.