Sharepoint? Yuck. You need to either look at a Content
Management System or a Document Management System. I know of two
CMS's in ColdFusion: FarCry (open source) and CommonSpot. But you
may need more of a Document Management System. I know of no product
in ColdFusion for that. I can recommend two products for this based
on what I've researched:
Alfresco (Java based, commercial open source)
and KnowledgeTree (LAMP based, commercial open source)