Simple question, are there any existing tools in which I can input a startup's name and find others like it? Shared investors + AngelList/CrunchBase tags could be used as a proxy, but there has to be more than that.
Quora is usually a good place for finding stuff like this. Usually someone has already asked a question for startups similar to X (assuming X is popular enough), and one of the answers is usually rather comprehensive.<p>For example:
<a href="http://www.quora.com/What-startups-are-working-on-Uber-for-X" rel="nofollow">http://www.quora.com/What-startups-are-working-on-Uber-for-X</a>?
Not trying to troll but Google usually works just fine for that kind of thing. However I do accept that it would be nice to have a utility designed specifically for that kind of question.