Libraries and Toolkits
- Apprentice - free OpenInventor work-alike
 - Coin - OSS Open Inventor clone
 - Ch - OpenGL bindings for the Ch C/C++ interpreter
 - FOX - GUI Library
 - GL4Java - a Java wrapper for OpenGL
 - GtkGLArea - OpenGL Gtk widget
 - GtkGLArea-- - OpenGL Gtk-- widget for C++
 - GTKpas - OpenGL Gtk widget for FreePascal
 - FreeGLUT - a GLUT work-alike
 - Fortran77/90 bindings for OpenGL and Mesa - by William Mitchell
 - GLOW - a GUI toolkit for GLUT and OpenGL
 - Glt - an OpenGL C++ toolkit
 - GLUT (GL Utility Toolkit) - by Mark Kilgard
 - GuileGL - OpenGL and GtkGLArea language bindings for Guile
 - IDL - Interactive Data Language
 - JX - C++ application framework and GUI library
 - MAM/VRS - object-oriented toolkit for 3D graphics
 - MINOS - GUI library
 - OglCLib - C++ wrapper for OpenGL
 -  Open Inventor - the Open Inventor toolkit from SGI
 - Open Inventor - the Open Inventor toolkit from Template Graphics Software, Inc.
 - OpenRM
- Open Source, multithreaded, parallel scene graph API
 - 
Open SG PLUS - a scene-graph library
 - Open Scene Graph
 - a scene-graph library
 - OpenVRML
- a VRML parsing/display library with "lookat" - an example VRML browser
 - PLIB - A collection of portable games libraries, including an OpenGL GUI and a simple Scene Graph API
 - Pryan - an OpenInventor-like toolkit
 - PyOpenGL - OpenGL interface for Python
 - Quesa - QuickDraw3D-compatible library based on OpenGL, Mesa or Direct3D
 - repGL - IRIS GL emulated with OpenGL
 - SciTech MGL - A multiplatform (Windows, Linux, OS/2, DOS, QNX, SMX, RT-Target & more) graphics library
 - SGL - a 3D Scene Graph Library
 - SoFree - a free implementation of Open Inventor
 - Togl - Tcl/Tk widget for OpenGL
 - VLE - Virtual Reality Toolkit
 - View3D Widget - 3-D GUI widget
 - VTK - Visualization Toolkit
 - YAJOGL - Yet Another Java GL Binding.