Crunchbase - Crunchbase is a platform for discovering industry trends, investments, and news about companies around the world.
Flare by GoDaddy - Discover, give feedback and support startup ideas
CB Insights - CB Insights is a company database for the venture capital and corporate development community.
Wittycircle - Networking tool for entrepreneurs, makers and curious minds.
Tracxn - data on companies
Generating Product Ideas - Find ideas for your next business or side project