VRML
- CismoPlayer
http://www.cosmosoftware.com
VRML Player - Internet Browser Plug-in - OpenVRML
http://www.openvrml.org/
OpenVRML library for reading, viewing, and writing VRML - VRML97 Specification, ISO/IEC 14772-1:1997
http://www.web3d.org/Specifications/VRML97/