A minimalistic digital logic simulator
Model-rocketry aerodynamics and trajectory simulation software
A Control Systems Toolbox for Julia
Massively parallel rigidbody physics simulation
A cross-platform statistical package for econometric analysis
An advanced network simulator to design and configure virtual networks
FlightGear Flight Simulator: free open-source multiplatform flight sim
The Open Source CFD Toolbox
General Mission Analysis Tool
Data Analysis, Simulations and Visualization on the Sphere
SUMO is a microscopic, multi-modal traffic simulation.
A library for polyhedral mesh generation
Industry standard communication with compliant image generators.
A library for scientific data visualization
Digital Circuits Design and Simulation
System dynamics program with additional features for economics
A 3D surface and volumetric mesh generator for MATLAB/Octave
Individual-based forward-time genetics simulation software
An EnergyPlus shell for parametric studies and more ...