Google launched a new Google Data API for Google Sites. The API supports most of the functionality found in Google Sites, which includes the ability to: Retrieve, create, modify, and delete pages and content, Upload/download attachments, Review the revision history across a site, and Display recent user activity. To get started, see full documentation, Java Developer's Guide, code samples, or SharePoint Move for Google Apps. Also open-sourced import/export tool that uploads or creates a local back-up of an entire Google Site.