This few days we have been talking about looking at Open Source Software (OSS) for possible applications in schools, to support teaching and learning. Chanced open this site(KnowNet), home to 2 OSS, namely Plone and Zope.
For future reference purpose:
Zope is an open source application server for building content management systems, intranets, portals, and custom applications.
Plone is ideal as an intranet and extranet server, as a document publishing system, a portal server and as a groupware tool for collaboration between separately located entities.