[Zope] *Simple* Zope product to implement a collaborative Web site

I'm looking for a *simple* Zope (Zope is not really mandatory but I like it and this is a Zope list after all) product to implement a collaborative Web site. A sort of poor man's Web Content Management system. Here are my main requirments: 1) Ability for the registered users to add easily any type of files (.pdf, .dvi, .txt and even .html). 2) Shrink-wrapped software, I don't have the time right now to develop a custom application. 3) (If possible.) History of changes, deletions, etc. I considered Portal For All <URL:http://www.zope.org/Members/dgeorgieff/popoto> which seems fine and CMF which seems overkill. Any suggestion?