The Google Calendar Connectors are a set of services that allow Google Calendar to interoperate with Exchange 2000 or Exchange 2003 servers through the bi-directional sharing of Calendar Free / Busy information. Each of the tools is installed in the local Exchange environment and must be maintained / configured by an Exchange Administrator.

August 20, 2008: Version 1.2 has just been released. See the announcement.

This open source project is a developer and partner release and is not targeted for direct customer or end-user installation. The Google Calendar Connectors represent a set of tools and should not be considered native functionality of Google Apps Premier & Education Editions.

• Google Calendar Connector Web Service: This connector allows users in Google Calendar to see free/busy information for users who maintain their calendars in Exchange. It is a .NET web service that takes requests sent from the browser with Google Calendar and returns free/busy obtained from a Microsoft Exchange 2003 server.

• Google Calendar Connector Sync Service: This connector allows users of Microsoft Exchange to see free/busy information for users who maintain their calendars in Google Calendar. It is a Windows Service that periodically queries the Google Calendar GData API to get updated free/busy information and publishes this information as free/busy information in Exchange.

Notice: The Google Calendar Connectors represent a set of tools for interoperation, and not a self-contained solution. Bi-directional free/busy scheduling requires a Google Apps Premier Edition domain which has been enabled for calendar interoperability.

A special thanks to Bill Mers for his contributions to the project.