FlightGear Flight Simulator: free open-source multiplatform flight sim
3D Engine c++
An interactive viewer for three-dimensional chemical structures.
DirectX 8 to OpenGL wrapper for legacy apps and portability
Open Source Solid Modeling CAD
LDraw™ editor for LEGO® style digital building instructions.
Realtime raytracer using SIMD on ARM, MIPS, PPC and x86
Interactive 3D Layout Viewer for GDSII
A project that has moved to GitHub
3D Without Boundaries
rayshade and POV for Mathematica Export + view