Written by Google, this library is a flexible, efficient, and powerful Java client library for accessing any HTTP-based API's on the web. It features a powerful and easy to use OAuth 2.0 and OAuth 1.0a library with a consistent interface. It's XML and JSON data models are light-weight, efficient, and support any data schema.
This is the recommended library for accessing Google API's, and features a set of generated libraries for Google APIs based on the new API infrastructure.
The Gnip Audience API now features Twitter aggregate user age information. The Gnip Audience API includes nearly one dozen demographic models including gender, interests, TV genre, TV show, language, etc. User age is the newest addition to the set of Gnip Audience API demographic models.