TweetStream is a code library available on GitHub. In the site, users can find content related to installation, usage, and changes in 2.0. Additionally, they can review methods to use Twitter UserStream and Twitter Site Streams. TweetStream supports OAuth and Basic Auth.
A team at Indiana University created Scholarometer to "facilitate citation analysis and help evaluate the impact of an author's publications." The crowdsourced data created through the Scholarometer platform is available through the Scholarometer API that allows developers to track certain authors through name, citation, disciplines, relevance, and other metrics.
Metwit is a crowdsourced API platform that provides third party applications the ability to integrate media-rich local weather and environmental data that is hyperlocal and in real-time. The Metwit API Platform collects weather information from Twitter, Instagram, NOAA and other sources which makes it possible for third party applications to use tweets, photos, and metatags to provide users accurate and interactive local weather information.