FullContact 2.0 is a Java SDK for the FullContact Developer API. The FullContact Developer API is used to manage and enhance contact information. All successful responses are returned in JSON, XML, HTML or vCard, depending on the response format. There are different paid endpoints, such as the Person, Card Reader , and Disposable Email endpoints.
To provide more options in searching for relevant contacts, Microsoft has decided to transition WorkingWith API users to its new People API. The People API not only provides more robust metadata than the WorkingWith API, the People API includes greater browse/search functionality and ranking system.
Google has made several announcements about APIs recently, including the launch of the Content Experiments API, the launch of the new Cloud SQL API, and the availability of the CalDAV and CardDAV APIs to the public.