Dit is hot hot hot. Volgens kenners een open source versie van Sharepoint van Microsoft. En het gaat groot worden (volgens dezelfde kenners).

Plone is built on top of the open source application server Zope and the accompanying Content Management Framework which has thousands of developers around the world supporting it.

Plone is ideal as an intranet and extranet server, as a document publishing system and as a groupware tool for collaboration between separately located entities. A versatile software product like Plone can be used in a myriad of ways. Look through the sites that use Plone section to see a variety of ways people have implemented Plone and Zope solutions.

plone.org:

What is Plone?
Plone is a free, open source Content Management System. The focus of Plone is to provide value at every level of an organization. It comes with a workflow engine, pre-configured security and roles, a set of content types and multi-lingual support. There are many developers, writers and testers from all over the world, contributing to Plone everyday. Plone is based on the Content Management Framework.