EasyFoursquare4Android is a library that lets users issue calls to the Foursquare API from Android apps. The library's methods allow users to retrieve user information, nearby venues, venue details, nearby trending venues, and nearby tips. Users can also check in at events and get any user's check-ins, friends, venue history, and venue photos.
Path.com has a mobile app, so of course it has an API. Someone sniffed the traffic and discovered something naughty. And you know the answer-anything Wolframe Alpha? Find out why it really, really likes Apple's Siri. Plus: Facebook gaming, Google Plus developers and 18 new APIs.
Expion, a Social Media Management System (SMMS) company, specializes in helping companies manage their brand images on social networks, from Facebook to Youtube to Twitter, often relying on partners' APIs to pull of some of their more interesting feats. Most recently, it was chosen by Google as a Google Plus API partner for the brand-focused Pages feature.