C++ Object-oriented Graphics Rendering Engine.

Free (LGPL) and portable 3D Game Development Kit written in C++, OpenGL and software renderer.

Realtime 3D game/visualization engine, written in C++, scriptable through Tcl/Tk, Python and Lua. Supports D3D and OpenGL for rendering, runs under Linux and Windows. Includes news, documentation and downloads.

Overview of 3D engines for games, business applications and virtual reality with various platforms, APIs and programming languages.

C# OpenGL and Cg 3D Game Engine for .NET

OpenGL 3D engine with GPL license, 3D, Physics and AI.

Delphi OpenGL engine including visual components and objects for rendering 3D scenes.

Full featured, object oriented and multiplatform 3D engine.

3D game engine based on the OpenGL API written in C++. Also real-time computer graphics examples using the OpenGL API.