Ashlar-Vellum CAD Drafting and 3D Modeling Software Ashlar-Vellum precision 2D, 3D CAD drafting, and solid and surface modeling and drawing software for Macintosh and Windows. The official home page of Vellum software
http://www.ashlar.com/
CAD-Software AutoCAD - Software and Add-ons from CAD-Software, Engineering Software Resource Site featuring software. Many solutions for all AutoCAD versions from r14 to 2008. Also featuring new CAD products for AutoCAD