GLUT
freeglut, GLUI, GLUT - OpenGL Utility Toolkit, GLUT FAQ, GLUT for Win32, OpenGL/GLUT Tutorial, OpenGLUT
Open Inventor
Apprentice, Open Inventor at MeVisLab, Open Inventor FAQ, Systems in Motion: Coin, TGS, Win32 port of Open Inventor
Devlib Central
LGPL OpenGL API-based library designed to make multimedia productions easier and more intuitive to write. Compatible with DevCpp and VC7.
extglgen
Tool to generate an OpenGL library to load and use all OpenGL extension functions up to version 2.0 defined in the SGI glext.h header file.
GL2PS
C library for creating high quality vector output (primarily PostScript) from an OpenGL application.
GLE
Tubing and Extrusion API for drawing tubing, extrusions and sweeps using OpenGL.
GLE32:
GLE OpenGL Library for Windows - OpenGL Tubing and Extrusion (GLE) library.
GLEW
The OpenGL Extension Wrangler Library is a tool that helps C/C++ developers initialize extensions and write portable applications on Windows, Linux, Darwin, Irix, and Solaris platforms.
GLFW
Free, open source, portable framework for OpenGL application development
glpng
Library for loading PNG graphics as OpenGL textures.
GLT
Portable C++ OpenGL Toolkit including GLUT wrapper and utility classes.
GtkGLArea
An GTK+ GUI library widget for displaying OpenGL renderings.
libGLobs
C++ library for RAD (Rapid Application Development) UNIX/Linux OpenGL games and applications.
LibSpider Engine
A library of useful c++ classes which can be used in making 3d games and applications with OpenGL and GLUT. [Open Source, GPL]
PortaLib3D
Window management, Fonts, texture and model handling. Milkshape3D Models. Dynamic Shadows.
Qt OpenGL extension
OpenGL extension to the Qt GUI software toolkit.
UFO
High level platform-independent GUI for 3D programming with OpenGL.