FlightGear Flight Simulator: free open-source multiplatform flight sim
3D Engine c++
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
3D Without Boundaries
Tao3D is a programming language for real-time interactive 3D
Program for drawing 3D surfaces from parametric equations
Realtime 3D engine for game development