flight simulator x

Realistic animated 3D space flight to the Moon. Incredible space scenes.

A Modbus RTU/ASCII master and Modbus TCP client simulator.

Trading Strategy Tester for FOREX is a software simulator of Foreign Exchange

Blackjack simulator for practice, strategy generation, edge and probabilities

Atanua - Real time logic simulator with a very low learning curve

Smart Card software simulator.

Analog circuit simulator with rapid schematic capture, many simulation features

A sandpile simulator with documentation.

TSim+ is a free stocks and futures trading simulator and LIVE trading platform

The A-110 is a tube amp simulator with a built in 3 band EQ and more.