Part of the Khronos Group

OpenGL & OpenGL Utility Specifications

OpenGL Specifications and GLX & GLU Libraries can now be found in the official OpenGL Registry.
OpenGL Reference Cards
GLUT Specifications
  • FreeGlut - Sourceforge
  • GLUT 3 Specification (HTML), (pdf), (PostScript)
  • The GLUT 3.5 Manual Pages (Postscript as gzip)
    • GLUT is the OpenGL Utility Toolkit, a window system independent toolkit for writing OpenGL programs. It implements a simple windowing application programming interface for OpenGL. GLUT makes it considerably easier to learn about and explore OpenGL programming and provides a portable API so you can write a single OpenGL program that works on both Win32 PCs, Mac OS, and Linux/UNIX workstations
Man Pages

OpenGL, GLX, and GLU man pages are online in the OpenGL SDK.

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