Win32 port of Open Inventor
- A Win32 port of SGI's Open Inventor by Gerd Hesina.
- http://studierstube.icg.tu-graz.ac.at/openinventor/

Open Inventor at MeVisLab
- Freely downloadable installers of our SGI Open Inventor Windows port with complete source code + patches as well es example models and HTML documentation of the classes.
- http://www.mevislab.de/inventor/

Apprentice
- A free Open Inventor clone.
- http://mrpowers.com/Apprentice/

Systems in Motion: Coin
- Coin is an OpenGL based, retained mode 3D graphics rendering library. It is implemented in C++ and publicly released with the source code open for your perusal. The application programmer's interface (API) is based on (and will eventually be fully compat
- http://www.coin3d.org/

TGS
- Providers of Open Inventor.
- http://www.tgs.com