Model-rocketry aerodynamics and trajectory simulation software
A cross-platform statistical package for econometric analysis
Individual-based forward-time genetics simulation software
The Open Source CFD Toolbox
General Mission Analysis Tool
Data Analysis, Simulations and Visualization on the Sphere
Modular System for Shelves and Coasts
physics-based multicellular simulator
Digital Circuits Design and Simulation
Industry standard communication with compliant image generators.
JASI - Java Event-Based Simulation Framework
3D driving simulation based on Open Dynamics Engine
Interactive geometry software for Euclidean and non-Euclidean spaces
A High-level Utility Package for FMI-based Software Development
HP-41cx Emulator
OpenNum lets you distribute solvers with a nice graphical interface