A project that has moved to GitHub
GLFW is an Open Source, multi-platform library for creating windows with OpenGL contexts and receiving input and events. It is easy to integrate into existing applications and does not lay claim to the main loop. GLFW has moved to GitHub: https://github.com/glfw
Explore procedural worlds on your GPU. Worlds are defined by GLSL programs that map XYZ coordinates to the distance to the nearest surface. Design your own worlds, modify parameters in realtime and render hires videos of your recorded journey.
AllegroGL is a small library intended to allow Allegro applications to use OpenGL in Unix, Windows, Mac OS X and DOS.
A 3D rendering / entity engine
This engine is not an attemp to re-inventing the wheel. It is a more learning-oriented project than something intended to provide a wide set of features. The approach to the OpenGL in this engine is something very experimental born from my own thoughts and can be usefull in future. If you want to help for your portfolio just ask: the TODO list is very long :)
A hight performance well designed Collision Detection Library for the Open Dynamics Engine. Supports CONCAVE TRIMESHES and Deformable bodies.
Embedded Font Generator (EFGen) is a generator of a cross-platform ANSI C code that renders a text using OpenGL. Generated code includes everything you need to render a custom text, also it is easy to compile and link with your application.
Multi-Language Wrapper Collection for the Irrlicht Engine
2licht's aim is to provide a collection of wrappers for the popular Irrlicht Engine (http://irrlicht.sf.net/). It is still in development; the first wrappers to be released will be the C and Object Pascal interface; followed by a .NET library.
CorEngine is a work in progress, OpenGL graphics powered 3D game engine designed to help independent game developers with quick prototyping and game/virtual environment creation. The engine supports a standard set of features, like skeletal animation, post processing, Lua/C programming, physics powered by Bullet Physics, GUI and 2D/3D Audio.
A fork of Sauerbraten/Cube2 (sauerbraten.org) with several multiplayer modes, online map editing, dynamic mapmodel physics, enhanced particle effects, unique weapons and powerups, and more. This project is currently not under active development.
3D game engine for C and C++
Create C/C++ 3D games easily! Game engine including higher-level functions and highest-level that are little less than working games! Include an audio system, an thread system, events, entities, physics, etc. This engine is written in C and C++. But can be used from both languages. It is powered by glib, Irrlicht engine, OpenAL, ODE, Ogg vorbis, etc
The Selene Engine is an open source realtime 3D engine written in c and c++. It's a light-weight engine with a carefully implemented software renderer. The D3D and OpenGL render subsystems are also included.
A compact framework for managing OpenGL graphics in C language.