Individual-based forward-time genetics simulation software
Interactive geometry software for Euclidean and non-Euclidean spaces
Biomolecular electrostatics software
Allows you to build your own circuits and test them
Flexible and eXpandable Cpu simulation
Traas - Traci as a Service
The Repast Suite is a family of free agent-based modeling libraries.
The functional model of the old calculator series Wang 700 and 15VSM
Command Centre
A 3D Shareware Starflight Simulator by Deneban Software
Evolving Artificial Life
Simulation of historical and contemporary launch vehicles
Electric Behaviour of Crystals and Pierce Crystal Oscillators
(Moved to http://code.google.com/p/igb/)