SUMO is a microscopic, multi-modal traffic simulation.
MGSyn - Automatic Synthesis for Industrial Automation
The Repast Suite is a family of free agent-based modeling libraries.
Modeling and Simulation made NiCE!
A virtual planetarium for observers of the real sky.
An ideal gas simulator 2D developed in Java
mesoFON is an individual-based mangrove forest model, a KiWi extension
Examples for the aXBench.