Crunchbase - Crunchbase is a platform for discovering industry trends, investments, and news about companies around the world.
WebTechResources - Find best tech resources everyday, sorted by people like you, ready to select and use.
CB Insights - CB Insights is a company database for the venture capital and corporate development community.
AlternativeTo - AlternativeTo lets you find apps and software for Windows, Mac, Linux, iPhone, iPad, Android, Android Tablets, Web Apps, Online, Windows Tablets and more by recommending alternatives to apps you already know.
Owler - Owler is a crowdsourced data model allowing users to follow, track, and research companies.
JSter - JSter is a community-driven catalog of the most useful javascript libraries.