Open CASCADE Technology is a software development platform freely available in open source. It includes components for 3D surface and solid modeling, visualization, data exchange and rapid application development. Open CASCADE Technology can be best applied in development of numerical simulation software including CAD/CAM/CAE, AEC and GIS, as well as PDM applications. BUGS: the interesting parts of this port are the libraries, but some components like Wok are not [yet] fully functional. WWW: http://www.opencascade.org/