The best resource I have found is the SolidWorks API Help. There is a complete reference to the API, with examples to many of the methods.
If you have a SolidWorks Subscription, check out their library of samples:
http://www.solidworks.com/swdocs/Support/Subscription/html/
Go to the Model Library > API
Here are some other links:
http://www.solidworks.com/api/
http://www.solidworks.com/html/Products/api/index.htm
http://www.solidworks.com/html/Products/api/
http://www.nhcad.com/
http://solidworktip.tripod.com/index2.htm
http://www.trimech.com/techsprt-free-utilities.htm
http://www.extremedp.com/extreme/programs.htm
http://www.nhcad.com/
http://www.kentcontract.com
http://www.cpuandsimplepdm.com/
Recommended by berlitz:
http://swtools.cad.de
http://solidworks.cad.de/mm_index.htm (german)
http://solidworks.cad.de/mm_boerse.htm (german)
If anyone has additional links, use the "Send a Comment" link to let me know. I will add them to this FAQ.
