FlightGear Flight Simulator: free open-source multiplatform flight sim
Webots ROS 2 packages
Lua Virtual Reality engine
An in-app debugging and exploration tool for iOS
The Skyscraper Project
Combat Flight Simulator for LINUX. WW2. Network and VOIP. Open-source.
Air traffic control tower and radar simulator (solo + multi-player)
A multiplatform Flight Simulator
Opengate is a Jumpgate remake
A ROS/ROS2 Multi-robot Simulator for Autonomous Vehicles
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Generate X-Plane 11, 10 and 9 scenarios from OSM data
a webgl Cesium 3D flight simulator
an osm openstreetmap 3D / bing maps car / flight / ballon sim game
InfiFly a ML based 3D game.