FEATool Multiphysics is an easy-to-use FEA and CFD Simulation Toolbox
A library for polyhedral mesh generation
ASALI is an open-source code for chemical engineers
Open-Source Multiphysics FEA (FEM) Package
Utility to show live progress, status & stats for running simulations
Former home of the Virtual Cell platform (VCell), see http://vcell.org