Google has announced the release of the Google Calendar API. From the Google Code Blog.

Developers appreciate a nice web application, like the one that launched last week with Google Calendar. Even more, they appreciate a nice web application programming model that enables them to build applications, not just use them. Enter the Google Calendar data API.

The Google Calendar data API is based upon a common API model called GData. The GData model uses REST principles and Atom or RSS 2.0 syndicated feeds as the base resource model to expose data held by Google services (like Google Calendar).

Read the Rest of the Google Code Blog entry