Weresc (Popularity: )
http://www.weresc.com/ Offers CADE, a CAD ActiveX control to view and edit 2D vector graphic, with web and DXF support.
Kotem Technologies Inc. (Popularity: )
http://www.kotem.com/ Offers components for CAD/CAM software, such as the 3D Core CAD-engine, the SmartFit 3D best-fitting application, and related functionality.