The Gmail Objective-C SDK written by Google provides access to the JSON API considering Apple application development. It is compatible with iOS 3+ and Mac OS X 10.5+. Along with the access to the Gmail API, the Objective-C library can also interact with the AdSense, Blogger, Calendar, Drive, and Fitness Google APIs.
AddThis, a leading social infrastructure and analytics platform, has just announced the release of Social Brand Advocates, a new managed marketing service created to help companies connect and engage with consumers that are loyal and enthusiastic about their brands. In addition to marketing services, AddThis offers social plugins, analytics and consumer engagement tools as well as a variety of APIs and SDKs that allow developers to integrate the AddThis platform into websites and applications.
A trend is starting to emerge: Advanced technologies are being made available first as cloud services that organizations can invoke easily via an API, rather than having to figure out how to deploy and master themselves. The latest example of that trend is a cloud service from AlchemyAPI that takes advantage of machine learning and computer vision technologies to allow publishers and providers of ad networks to more easily monetize content.