FlightGear Flight Simulator: free open-source multiplatform flight sim
3D Engine c++
An interactive viewer for three-dimensional chemical structures.
Open Source Solid Modeling CAD
Xj3D is an open-source Java codebase for the X3D Graphics standard.
A project that has moved to GitHub
Earth orbits and satellite coverage display in 3D on your laptop.
3D Without Boundaries
Scanning Probe Microscopy Controller and Data Visualization Software