PowerCAD  
   CAD program in 2D/3D for architectural and mechanical applications, with AutoCAD compatibility features.
   http://www.powercad.com/

Touch-3D  
   3D modeling, unfolding and unwrapping program for Macintosh and Windows, and free-form add-on MCnurbs Creator for VectorWorks and MiniCad.
   http://www.algonet.se/~ludesign/

Evolution Computing, Inc.  
   Developers of the FastCAD and EasyCAD computer aided drafting programs
   http://www.fastcad.com/

Joel Orr's World of Technology  
   News and articles about CAD, plus books, humor, educational resources and relevant links.
   http://www.joelorr.com/

DesignCAD  
   Multipurpose software for 2D drafting and 3D solid modeling.
   http://www.DesignCAD.com/

solidThinking  
   Modelling software that supports NURBS, polygonal modeling, and subdivision surfaces, available for Windows and Macintosh.
   http://www.solidthinking.com/

VARKON  
   A parametric CAD system and development tool for engineering, computer aided design, and product modeling applications, with free download for Linux and Windows.
   http://www.tech.oru.se/cad/varkon/