FlightGear Flight Simulator: free open-source multiplatform flight sim
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
A real-time 3D Engine written in Ada
Earth orbits and satellite coverage display in 3D on your laptop.
LDraw™ editor for LEGO® style digital building instructions.
realistic driving simulation + functions for 2D/3D graphics
Lightweight and modular C++11 graphics middleware for data and games
Open Source graphic tool and alternative to Insane Bump
Highly accurate ray-tracing software system for UNIX computers
free implementation of the OpenGL Character Renderer
Pear3DEngine is a modern and modular 3D development framework
A simple web interface for Blender, for rendering animations..