Pymunk is a easy-to-use pythonic 2d physics library
Creative cellular automata browser game
Library for the numerical simulation of closed as well as open quantum
Cellular Automata library for SUPercomputers (CASUP)
An Open source Analysis and SImulation Toolbox for Fuel Cells
3D simulation library
Multithreaded N-Point Gravity Simulation for PC and Android
Advanced numerical instruments: adaptive meshing, FE methods, solvers
iAIDA is a C++ implementation of the AIDA interfaces.
Box2d Flash Alchemy Port + World Construction Kit