The most popular Twitter ranking service, Klout, has used its API platform to boost its growth. The company, which is also expanding outside of Twitter, saw calls to its Klout API more than triple in just a few months. The company is now clearly in the API billionaires club.
Geeklist offers developers an online haven to present their work, connect with other developers, and gain credit for achievements. Geeklist's lean staff proudly states that Geeklist was "[b]uilt by developers, for developers... we make geeks lives better every day." The API allows developers to create their own applications and services and retrieve any needed data from the Geeklist database. The API has remained in private beta since the Geeklist's original launch, but will open to the public with a 48-hour hackathon from November 30 - December 3.