Just saw that Edd Dumbhill mentioned Kupu and Plone on his
weblog.

But what really caught my attention was his column on XML.com
talking about Mozilla and Opera collaboration to leverage current
standards, and the fact that there seems to be consense that the
people driving W3C are targeting intranets much more than the
internet.

I confess that I had never seen things through this facet, and now
that I read it, I tend to agree.