Exploding Topics scours the internet to find exploding content topics before they take off.

Semrush is an all-in-one tool suite for improving online visibility and discovering marketing insights. Semrush is a popular SEO tool for conducting keyword research, competitor analysis, and Google Ad optimization.

a database of 1317 companies who went throught the Y Combinator accelerator program between 2005 and 2017 and a whole bunch of metrics about them