The Virtual Rendering System is a computer graphics software library for constructing interactive 3D applications. It provides a large collection of 3D rendering components which facilitate implementing 3D graphics applications and experimenting with 3D graphics and imaging algorithms.

VRS is implemented as a C++ library. Applications can incorporate VRS as C++ library based on the C++ API. In addition, we provide a complete Tcl/Tk binding of the C++ API, called iVRS . You can deploy VRS on common platforms such as X11/Unix and Windows 95/98/NT. It is distributed under the GNU Lesser General Public License.

http://www.vrs3d.org/