The A32NX & A380X Project are community driven open source projects
Model-rocketry aerodynamics and trajectory simulation software
FlightGear Flight Simulator: free open-source multiplatform flight sim
Simulation for spacecraft attitude control system analysis and design
A simulator for drones, cars and more, built on Unreal Engine
Advanced mission simulation and analysis tool
R/Bioconductor toolkit for mass spectrometry data
YASimCommander is a platform-independent editor for YASIM files.
action/combat flight sim
MIT's spacecraft simulator for control algorithm development