Mathematica Notebook for Calculating Three-Electron Hylleraas Integrals
This implements the recursion relations of Pachucki, Puchalski and Remiddi (DOI: 10.1103/PhysRevA.70.032502), which gives an analytical solution to this particular class of integrals.
IPython Notebooks
Comparison of Python plotting packages
3-j, 6-j and 9-j Wigner symbol calculator
Simple webpage using JavaScript to calculate the Wigner coefficients. These are used extensively when coupling angular momenta in quantum mechanics.