OpenNum lets you distribute solvers with a nice graphical interface
Molecular Dynamics Cell Construction
Create lipid-bilayer models of arbitrary geometry.
CPIB project aims to create a multiscale model of a plant root
Distributed Computing with JavaScript
A Library for Interactive Modelling and Visualisation
A program for approximate simulation of planetary systems
... [BATCH], [ANALYZE] and [OPTIMIZE] cases in OpenFOAM and others
Labcoat; the VHDL graphic emulator.