3D Engine c++
A real-time 3D Engine written in Ada
Tao3D is a programming language for real-time interactive 3D
A performant, flexible, and easy-to-use real-time 3D rendering engine
3D .NET engine for Windows, Linux, Mac
Design and Display Happy Cube solutions
PHIGS (Programmer's Hierarchical Interactive Graphics System)
Webgl Engine
A world editor for HGE game engine written in python and uses OpenGL.
an interactive 3D viewing program
3D game engine for C and C++
Pear3DEngine is a modern and modular 3D development framework