Preceden
Preceden is a web-based tool that lets you you make simple, powerful timelines for just about anything.
Goldhat
Goldhat is an online community where artists, writers and creative people connect with patrons who want to support their work.
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Infochimps API
Trstrank – a robust reputation metric for Twitter users (includes friend and follower counts), Wordbag – a user’s 100 most characteristic words, Influence – replies in/out and retweets in/out for a given user and more.
