This is cool. However, NumPy, SciPy, SymPy, Maxima and a whole lot of other tools are included in Sage, which is a competitor to Mathematica, Matlab, and Maple.

This is cool. However, NumPy, SciPy, SymPy, Maxima and a whole lot of other tools are included in Sage, which is a competitor to Mathematica, Matlab, and Maple. It's free and open-source. You can try it here: http://www.sagenb.org http://www.sagenb.org