http://mail.onenw.org/wiki/index.php/Email_And_Plone
http://ingeniweb.sourceforge.net/Products/
http://www.zope.de/dokumentation/plonebuch
http://jensquadrat.com/service/article/
Plone/Archetype Infos: http://docs.neuroinf.de/API/
http://www.dzug.org/dokumentation
http://www.geniisoft.com/showcase.nsf/WebEditors