application running on several machines, only the changes for each frame are sent to each machine and integrated into the local scene graph. This way the distinction between local and remote changes is almost invisible. An application that wants to run on a cluster just needs to open a ClusterWindow that can distribute all changes across the cluster and can very easily drive a Powerwall or a CAVE without having to worry about distribution protocols and other complications. People The project was started by Dirk Reiners, Gerrit Voss and Johannes Behr. it has received contributions by many other people, most notably by Carsten Neumann, who currently functions as the main maintainer. References External links OpenSG homepage SourceForge project page Ohloh.net project page 3D scenegraph APIs