Stratus: Integrate Salesforce.com and SharePoint
Allows users to automatically provision SharePoint sites from within Salesforce.com for any object types. SharePoint sites can then be used to store and access documents without ever having to leave Salesforce. Now works with Customer Portals too!
Stratus integrates Salesforce.com with Microsoft Office Sharepoint version 2007 or greater including WSS and SharePoint Online (Business Productivity Online Suite / Office365).