An open source re-implementation of Chris Sawyer's Locomotion
Includes tools for performing electronic calculations.
Digital Circuits Design and Simulation
AVR simulator IDE
Allows you to build your own circuits and test them
Small factory simulator for control logic test purpose
Build now your diagram logic circuit
Macro/Micro Magnetic Simulator
Timeseries handling, and solving of large-scale economic models
NEVESIM is an event-driven neural simulation tool.