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

[Stephane Bortzmeyer]

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?