snydeq writes "Google has launched the Google Apps Marketplace, providing a venue for third-party, cloud-based applications to supplement Google's own online applications. The program enables integrations with such applications as Google Gmail, Documents, Sites, and Calendar. All told, the effort begins with 50 vendors participating, including Atlassian, NetSuite, Skytap, and Zoho. Participation in Google Apps Marketplace is open to customers of the Premier, Standard, and Education editions of Google Apps. Applications are linked to the marketplace via REST Web services and APIs including OpenID and OAuth."