Zoho announced Zoho Office for Microsoft SharePoint, which allows users to work with Zoho online collaborative productivity applications to create, view, and edit files stored in Microsoft SharePoint. Zoho Office for Microsoft SharePoint is delivered as an add-on that installs on top of Microsoft SharePoint 2007 and 2003. Zoho Office for Microsoft SharePoint enables multiple users to work collaboratively on the same document at the same time, seeing each other's changes instantly.

(www.zoho.com)