Ashlar Inc.
Graphite 2D drafting as well as Cobalt, Xenon, and Argon versions of the Vellum 3D modelling software
www.ashlar.com Details

Autodesk Inventor
Solid modeling package for 3D mechanical design.
www.autodesk.com Details

Autodesk Inventor Tutorials by Sean Dotson
Basic and advanced tutorials on the use and customization of Autodesk Inventor 3D CAD software, discussion forums and current CAD news.
www.sdotson.com Details

Autopipe
Software that calculates piping code stresses, loads, and deflections under static and dynamic loading conditions, with special features for buried pipeline analysis, wave loading, and fluid transients.
www.autopipe.com Details

CADables
TurboCAD hatch patterns, color palettes, and related resources.
catalog.stormloader.com Details

Cadsoft Solutions, Inc.
Developer of Concepts Unlimited, 2D 3D modeling tools for Mac and PC designers. Supports precise NURBS,analytices, rendering, animiation and drawing composition.
www.concepts3d.com Details

CoCreate
Provider of engineering collaboration software for product design, management, and development, CAD, PLM, mechanical engineering, and workflow management.
www.cocreate.com Details

Drew's MCAD Connection
A technical resource for users of Autodesk's MCAD products including Mechanical Desktop and Inventor.
www.mymcad.com Details

Engineering Software Solutions
Developers of engineering based design software for special requirements in industries such as petrochemical, ship building, mining, civil, mechanical, structual, manufacturing, defence and aerospace.
www.ess.com.au Details