CMS Wire has an article by Barb Mosher titled, Under the Covers: Alfresco's SharePoint Services (WSS) Killer. The article is worth a read and provides a good overview of Alfresco's Share as well as the Alfreso Enterprise CMS.
Many analyst have said that SharePoint can be a beast to implement and maintain. The hidden costs associated with the platform also tend to catch many by surprise. Yet it is still one of the most implemented content management and collaborations solutions today.
So while most have elected to figure out how to integrate with SharePoint and grab a piece of that enterprise pie, Alfresco believes they have built an alternative...