AppNetKit is for Objective-C developers interested in working with the App.net API. The library is asynchronous and uses blocks to notify you of completions. As of late August 2012 this library interfaces with all portions of the app including: token, users, and posts.
For avid fans of television and film, Follow.it provides a platform to discuss, review, recommend, make connections with other like-minded enthusiasts and indulge in general movie banter. Follow.it also provides an easy to use the Follw.it API that allows developers to integrate its functionalities with other applications.
Popular image-sharing application mlkshk now has a mlkshk API for building mlkshk-enabled applications. The service provides a social image discovery and sharing technology, with a RESTful API allowing access to a user's mlkshk account, friends, favorites, and personal image collections also known as "shakes."