The OpenGL Web Site
http://appsrv.cse.cuhk.edu.hk/~csc3550/link/gl_link.html

GameDev.net -- OpenGL
http://www.gamedev.net/reference/list.asp?categoryid=31

Gateway to OpenGL Info
http://rsuss1.rnd.runnet.ru/linkfiles/opengl-links.html

GLUT API, version 3
http://www.opengl.org/developers/documentation/glut/spec3/spec3.html

OpenGL Resources
http://www.plunk.org/opengl/

Overview of OpenGL
http://tc1.chemie.uni-bielefeld.de/doc/OpenGL/hp/ImpGuide/01_Overview.html

SGI - OpenGL Home Page
http://www.sgi.com/software/opengl/