General Mission Analysis Tool
SUMO is a microscopic, multi-modal traffic simulation.
FlightGear Flight Simulator: free open-source multiplatform flight sim
System dynamics program with additional features for economics
Industry standard communication with compliant image generators.
Object-oriented equation-based modelling and optimisation software
Discrete System Modeler
Gradually Varied Flow (GVF) simulation.
slab3d is a real-time virtual acoustic environment.
Agent-based simulation toolkit
Open Source EEG project to translate player's mind into a virtual game
Real-time interactive 3D graphics API for scientific simulations
Utility to show live progress, status & stats for running simulations
Program to control vJoy / vXbox Device via keyboard, mouse, joystick.