FlightGear Flight Simulator: free open-source multiplatform flight sim
A ROS/ROS2 Multi-robot Simulator for Autonomous Vehicles
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Fractal planet and terrain generator
Virtual paper folding program
action/combat flight sim
smart car simulator
Boids-like walkers with 3d animation
QCSS Player by Shuffle
Random Tree Generator for MatLab
3d bird calls simulator
OpenGL Planets, a solar system simulation.