HEATKEYS

GrabCAD - a free CAD model library with 2D / 3D CAD files available for software like SolidWorks, AutoCAD, Autodesk Inventor, Solid Edge, SketchUp etc.

3D models for CAD/CAM/CAE designers. Cars, cities, airplanes and other polygonal and NURBS/SOLID models.

Engineers Edge - Total Design, Engineering & Manufacturing Resouces

Craftsmanspace contains free woodworking and metalworking DIY (do it yourself) project plans and patterns with detailed manufacture and assemblage descrfiption.

Product Design Forums is the community, blog & resources site, where industrial designers from all over the world come together to socialize and to create, share and find useful resources.

covering the most interesting product design, design process, tools and related technology in 3D product development.

archinoah.com is a architecture network for architects, interior architects, urban planners, engineers and students of these branches.

Gizmag covers the full gammut of new and emerging technologies, invention, innovation, and science news.

Siemens PLM Software’s product lifecycle management (PLM) solutions include digital product development, digital manufacturing and product data management

The SAI Organization is an International cooperation for incorporating scientific and engineering research with a focus on Information Technology.

3ders.org provide in-depth information about 3D Printing, rapid prototyping, rapid manufacturing, 3D Printers, 3D software, 3D services, 3D designers, 3ders, 3D printer price, 3D printer price compare, 3d printer price comparison

Computer-Aided Design and Applications is an international journal on the applications of CAD and CAM. It publishes papers in the general domain of CAD plus in emerging fields like bio-CAD, nano-CAD, soft-CAD, garment-CAD, PLM, PDM, CAD data mining, ...