Startup Data Trends is a way to browse the publicly visible startups on AngelList. One can search for startups in a specific location and/or market.
The returned startups can be filtered by their follower counts, screenshot counts, alphabetic order and a ranking function based on followers over time.
Alongside the startups, one can see some key metadata about the search itself, such as the average amount being raised by startups that match it, and the average public valuation.

Read more here.