OpenGL on OS/2 is supplied with two toolkits which provide simple windowing and input handling. These toolkits are not intended for application development, but for simple programs and demos. They are provided "as-is" on most OpenGL platforms, including OS/2. They are also used in sample code provided in the OpenGL Programming Guide published by Addison-Wesley (see OpenGL References). The AUX toolkit and GLUT toolkit are provided with OpenGL.