On Oct 26 14:15 -0600, Chris Burkhardt wrote: > SymPy: http://code.google.com/p/sympy/ > NumPy: http://numpy.scipy.org/ Just to mention it: Scipy is a collection of numerical routines built on top of numpy. Python wrappers of non-BSD libraries and other fun stuff: http://scipy.org/scipy/scikits/ And for plotting and convenient interactivity: matplotlib + ipython best, steve