Directory of Technology Companies

CrunchBase is the free directory of technology companies, people, and investors that anyone can edit.

It is developed and maintained by TechCrunch with the support of the tech community and visitors like you.

Here, you can learn and edit everything about companies like YouTube, Facebook, LinkedIn, Twitter and Digg

Currently, it has more than 11,000 companies listed in its database.

Website: http://www.crunchbase.com/