The Open Source CFD Toolbox
Component, CA, and CCA models; superdense time, DB repo, testing, etc.
Discrete-event simulation modeling software for science and education
Population Propogation in Python. Simulate births, marriages, deaths
PCRaster environmental modeling software
Toolkit for agent-based & dynamic microsimulation modelling
OpenM++: open source microsimulation platform
Simulation tool for the casino game Roulette
Common accessible environment for system dynamics simulation.
Web-based editor for the Gateway Description Language (GDL).
Network security simulator
Zwicker's Loudness Calculation (ISO532B) Tools