C4W
Offers modelling kernel libraries and related tools for construction, analysis, and presentation of 3D models.
www.c4w.com Details

Cadmai Software GmbH
Cadmai ist a parametric and relational CAD module that can be integrated as a intelligent viewer in other applications.
www.cadmai.com Details

Calligraphic Interface for Tridimensional Surface Modeling
An educational project trying to develop a gesture-based interface for 3D modeling. It uses wxWindows, ACIS, OpenGL and DevIL.
virtual.inesc.pt Details

Component Ingenuity, Inc.
DWGDOMlib and DXFDOMlib modules for reading and manipulating DWG and DXF files from within .NET applications.
www.componentingenuity.com Details

CurveTrainer
A basic experimental lab for geometric shape processing, for learning about the mathematical theory and practical manipulation of various parametric curves.
www.pml.co.jp Details

D-Cubed
Supplies geometric constraint managers, hidden line and collision detection components to the CAD/CAM industry.
www.d-cubed.co.uk Details

DInsight
KernelCAD is an embedded CAD software, which adds interactive 3D solid modeling functionality to any Windows application.
www.dynoinsight.com Details

DeveloCAD.com
Graphics libraries for Delphi developers, such as an OpenGL canvas, hidden lines algorithms, and geometry data management.
www.develocad.com Details

Gardos Software
Avax ActiveX control to view, create, edit, print, and manage 2D vector drawings.
business.hol.gr Details