CAD and CAM

• DesignCAD
  Multipurpose software for 2D drafting and 3D solid modeling.
• Evolution Computing, Inc.
  Developers of the FastCAD and EasyCAD computer aided drafting programs
• Joel Orr's World of Technology
  News and articles about CAD, plus books, humor, educational resources and relevant links.
• Varkon
  A parametric CAD system and development tool for engineering, computer aided design, and product modeling applications, with free download for Linux and Windows.