FEATool Multiphysics is an easy-to-use FEA and CFD Simulation Toolbox
CFDTool - Easy to Use Computational Fluid Dynamics (CFD) Toolbox
ASALI is an open-source code for chemical engineers
A shared memory parallel sparse matrix library including Sparse BLAS.
A powerful simulation for designing femtosecond lasers and amplifiers.
An Efficient Binary data Format
A collection of lecture notes and accompanying code on micromechanics