CAD 2002 Drafting software for 2D design on Windows, with a free demo for download after registration [requires Java for navigation]. http://www.cad2002.com/

JustCad A 2D CAD program for Windows, distributed as shareware. http://justcad.com/

ProCAD+ A computer aided 2D drawing program for Acorn RISC OS computers. http://www.dsnell.zynet.co.uk/CADindex.html

CadStd A drafting program for Windows, with a free lite version. http://www.cadstd.com/

Accucadd A Windows drafting program, the successor to the DOS based RoboCAD. http://www.accucadd.com/

Malz++Kassner GmbH CAD 5 drafting software for Windows, with plug-ins to support DXF, DWG, HPGL/2 and SVG file formats. http://www.malz-kassner.com/

Pressure Vessel Drafting Guide Detailed instructions on how do design and draft pressure vessels with AutoCAD, with examples. http://www.geocities.com/ww_chew/pvdrafting/pvd-frame.htm

Dexterpen A parametric drawing and calculating utility, for creating diagrams of variable geometry objects. Writes DXF files and copies to office applications. http://www.ransen.com/dexterpen/

General CADD Products, Inc. About the General CADD Pro 2D Windows CAD program, with user forums and a downloadable manual. http://www.generalcadd.com/

VectorEngineer A multi-purpose 2D CAD system for technical drawings, designs, and isometric visualizations. A free version is available for download. http://www.vectorengineer.com/

CAD Schroer GmbH Manufacturer and vendor of the MEDUSA parametric 2D CAD system, and several application specific extensions. http://www.cad-schroer.com/

Delta Software international CAD Pro is a drafting and design software with engineering precision and adaptive tools. http://www.cadprosoftware.com/

ZiPCAD A drafting program for Palm OS handheld computers, with DXF file export. http://www.zipcad.com/

TigerCad Budget 2D CAD software for mechanical, architectural and diagrams. http://www.tigercad.com/

Delta Cad A 2D CAD software designed to be easy to use. http://www.deltacad.com/

QCad A 2D CAD system for Linux, Unix Systems, Mac OS X and Windows, released as Open Source for unix based systems. http://www.ribbonsoft.com/qcad.html

PDM Guru Provides information on PDM Implementations and other interesting items on PDM in general. http://pdmguru.tripod.com/