HEATKEYS

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

YouTube is a place to discover, watch, upload and share videos.

Cemetech is a development site and community forum for TI-83+, TI-84+, and Nspire TI graphing calculator programming, web programming, and hardware modifications.

For the student or professional - famous inventors and inventions - history timelines - patents trademarks and copyrights - manufacturing resources - interviews with successful inventors - understanding the business of how to sell or license your new...

LinkedIn strengthens and extends your existing network of trusted contacts. LinkedIn is a networking tool that helps you discover inside connections to recommended job candidates, industry experts and business partners.

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

MasterGraphics is a value-added solutions provider with a practical approach to technology systems helping design-intensive businesses work smarter, harder and more profitably. We help you innovate by taking your design data further: We make it work.

Celebrating all things locomotive, from train history and modeling updates to rail culture, old and new - plus two fun train games Battle Train and Rail Race.

CADTutor provides free video tutorials, articles, downloads and a busy community forum for users of AutoCAD and associated software.

A Green Design Blog, Sustainable Design Blog, Future-forward design for the world you inhabit - your daily source for innovations in sustainable architecture and green design for the home.