HEATKEYS

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

3dmodel777.com: Completely free 3d models download, free 3d texture, free cad download,3d cad model, modeling, Render to texture, textures, cad modeling, cad drawings, cad blocks, cad download, cad design, electrical cad

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.

Interesting architectural articles covering basic tutorials, 3d modeling models and many more

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

A community committed to sharing Perl knowledge and coding tips. The site contains questions and answers, useful snippets, and a library of code.

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

United States Ergonomics provides expert ergonomic consulting services in Industrial, Office and Product Ergonomics to companies throughout the world. US-Ergo is the only company to provide Ergonomic Product Certification in the US.