Joseff Betancourt has written an interesting article on CTOEdge, entitled “How to Save Money by Replacing Microsoft SharePoint with WordPress”.
“In order for WordPress to become that functional SharePoint replacement sytem, a few tweaks need to be made.” The suggested setup needs WordPress’s Multi-Site feature enabled and BuddyPress installed.
Full article: http://www.ctoedge.com/content/how-save-money-replacing-microsoft-sharepoint-wordpress