foursquare-ios-api is an Objective-C wrapper that allows users to integrate version 2 of the Foursquare API into iOS applications. The wrapper's prerequisites are Xcode 5+, iOS 7.0+ as a base SDK, and iOS 5.0+ as a deployment target.
Our API directory now includes 945 social APIs. The newest is the SmartBots API. The most popular, in terms of mashups, is the Twitter API. We list [num] Twitter mashups. Below you'll find some more stats from the directory, including the entire list of social APIs.
Social sharing site Digg is preparing a version upgrade to its API. Along with its flagship site's major redesign, which is not yet public, Digg will launch v2 of its developer platform. However, there are new digs for Digg developers available now, with documentation, language kits and what will likely become an app gallery.