The Open Source CFD Toolbox
XFLR5 is an analysis tool for airfoils, wings and planes
General Mission Analysis Tool
Digital Circuits Design and Simulation
Model, simulate, and analyze biochemical systems using one tool.
Component, CA, and CCA models; superdense time, DB repo, testing, etc.
Measurement and Automation Framework + Tool
Frevo is probably the simplest tool for evolutionary design
Automates the building of VANET simulations using SUMO and OMNeT++
Advanced mission simulation and analysis tool
A High-level Utility Package for FMI-based Software Development
NETGEN is an automatic 3d tetrahedral mesh generator
Simple theme park visitor simulator
Draw and Simulate Finite States Machines (FSM)
python library for shock response spectrum (SRS) analysis.
Real-time interactive 3D graphics API for scientific simulations
Portable OS X FOSS applications
Population Propogation in Python. Simulate births, marriages, deaths
Radial-velocity & transits analysis tool for exoplanets
RSSceSim - Reputation System Scenario Simulator
vinylsimtool: simulation of vinyl record playback