The new Force.com Toolkit for Google Data APIs makes it easy to develop Force.com applications that make the most of the capabilities of Google Data APIs, including read and write access to data and content in Google Apps. The toolkit provides you direct access to the Google Data APIs from Force.com's Apex code, allowing the easy creation of new user experiences and Web applications that connect directly to Force.com’s database, integration, Apex programming language, and Visualforce user interface capabilities.
The new Force.com Toolkit for Google Data APIs provides a free and open-source set of tools and services that developers can use to take advantage of Google Data APIs from within Force.com. The goal of the toolkit is to make Google Data APIs – starting with Spreadsheets, Documents and Calendar – first class citizens of the Force.com environment. Specifically, the toolkit exposes these APIs directly within Apex, making it easier to access them natively from Force.com apps and providing tighter integration between the platforms with less developer effort.
The Tooolkit includes all the code plus extensive documentation. To get started, you'll need to be sure you have the Eclipse-based Force.com IDE installed with the Subversion plugin. The details are covered in the Toolkit Setup document listed below.