Radiation Spectrum Method : a modal BPM (Beam Propagation Method)
DMFT and cellular-DMFT code
solves nonlinear Kohn-Sham equation for the neutral atom.
GMES is a free Python package for FDTD electromagnetic simulations.
Plugin orientated Discrete Dipole Approximation (DDA) Solver
Runge is an Interactive Solver for Systems of Differential Equations