A minimalistic digital logic simulator
A MATLAB toolbox for exporting publication quality figures
General Mission Analysis Tool
XFLR5 is an analysis tool for airfoils, wings and planes
The Open Source CFD Toolbox
Digital Circuits Design and Simulation
Measurement and Automation Framework + Tool
Frevo is probably the simplest tool for evolutionary design
Model, simulate, and analyze biochemical systems using one tool.
Component, CA, and CCA models; superdense time, DB repo, testing, etc.
Population Propogation in Python. Simulate births, marriages, deaths
Automates the building of VANET simulations using SUMO and OMNeT++
NMR spin dynamics simulation
Advanced mission simulation and analysis tool
A High-level Utility Package for FMI-based Software Development
Simple theme park visitor simulator
Draw and Simulate Finite States Machines (FSM)
A macOS app to control the Xcode Simulator
Real-time interactive 3D graphics API for scientific simulations
Radial-velocity & transits analysis tool for exoplanets
RSSceSim - Reputation System Scenario Simulator