FlightGear Flight Simulator: free open-source multiplatform flight sim
System dynamics program with additional features for economics
The Open Source CFD Toolbox
Object-oriented equation-based modelling and optimisation software
A multi-modeling and simulation environment to study complex systems
The DREAM toolbox is a free open source acoustic field simulation tool
Acoustic Simulation Library for Frequency and Time Domain Simulations.
solves nonlinear Kohn-Sham equation for the neutral atom.
LBM3fm - Lattice Boltzmann method for film flow modelling
A Library for Interactive Modelling and Visualisation
Visu@lGrid - IDE for Building BOINC Projects
A platform for modelling influenza-like epidemics and containment