Findchips - Findchips is a database for searching electronic parts and components and provide datasheet and bill of materials from multiple distributors and manufacturers.
Component Search Engine - Search to find and download PCB footprints and schematic symbols for direct use in compatible ECAD tools.
Digchip - Digchip is an electronics database and documentation search engine that also acts as a 3rd party agent between distributors and buyers.
Thingiverse - Thingiverse.com is the place to share digital designs for fabricating real, physical objects.
SourceMe - Browse one of the largest worldwide database of reliable manufactures of industrial sensors, encoders and cameras. Improve your supply chain with trusted contacts!
GrabCAD - Helping mechanical engineers build great products faster