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

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

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

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