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OSG OpenSceneGraph - http://www.openscenegraph.com/
OpenGL portable, 3D high performance graphics toolkit for applications such as flight simulators, games, virtual reality or scientific visualization. C++ object oriented framework on top of OpenGL running on Windows, OSX, Linux, IRIX, Solaris and FreeBSD systems. |
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OpenSG - http://www.opensg.org
Open source portable scenegraph system to create realtime graphics programs. Runs on IRIX, Windows and Linux and based on OpenGL. |
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GizmoSDK - http://www.gizmosdk.com/
Saab Training Systems AB commercial scene graph. |
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RM Scene Graph - http://www.r3vis.com/RM/
Cross-platform, OpenGL scene graph API for creating graphics and visualization applications. |
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OpenRM - http://www.openrm.org/
An OpenGL scene graph API used for developing high performance and portable 3D/2D/stereo graphics and visualization applications. [Open source, MPL] |