Editing OpenGL Utility Toolkit (section)

== Implementations ==
The original GLUT library by Mark Kilgard supports the [[X Window System]] ([[GLX]]) and was ported to [[Microsoft Windows]] ([[WGL (software)|WGL]]) by [[Nate Robins]]. Additionally, [[macOS]] ships with a GLUT framework that supports its own NSGL/[[Core OpenGL|CGL]].

Kilgard's GLUT library is no longer maintained, and its license did not permit the redistribution of modified versions of the library. This spurred the need for [[free software]] or [[Open-source software|open source]] reimplementations of the API from scratch. The first such library was [[FreeGLUT]], which aims to be a reasonably close reproduction, though introducing a small number of new functions to deal with GLUT's limitations. OpenGLUT, a [[fork (software)|fork]] of FreeGLUT, adds a number of new features to the original API, but work on it ceased in May 2005.

Mark Kilgard has a GitHub repository for GLUT.<ref>{{Cite web|url = https://github.com/markkilgard/glut|title = Glut|website = [[GitHub]]|date = 21 November 2021|access-date = 13 October 2014|archive-date = 11 June 2018|archive-url = https://web.archive.org/web/20180611001101/https://github.com/markkilgard/glut|url-status = live}}</ref>  The glut.h header file contains the following license:<ref>{{Cite web|url = https://github.com/markkilgard/glut/blob/master/include/GL/glut.h|title = Glut|website = [[GitHub]]|date = 21 November 2021|access-date = 13 October 2014|archive-date = 3 August 2022|archive-url = https://web.archive.org/web/20220803003718/https://github.com/markkilgard/glut/blob/master/include/GL/glut.h|url-status = live}}</ref>

 /* Copyright (c) Mark J. Kilgard, 1994, 1995, 1996, 1998, 2000, 2006, 2010. */
 
 /* This program is freely distributable without licensing fees  and is
   provided without guarantee or warrantee expressed or  implied. This
   program is -not- in the public domain. */