A freely licensed alternative to the GLUT library
freeglut is a completely open source alternative to the OpenGL Utility Toolkit (GLUT) library with an OSI approved free software license. GLUT was originally written by Mark Kilgard to support the sample programs in the second edition OpenGL 'RedBook'. Since then, GLUT has been used in a wide variety of practical applications because it is simple, universally available and highly portable. freeglut allows the user to create and manage windows containing OpenGL contexts on a wide range of platforms and also read the mouse, keyboard and joystick functions.