ZopeZen - Isn't it cool when standards work? :)
http://www.zopezen.org/Members/HammerToe/news_item.2005-01-22.1621934488
"Uploading existing HTML content to Plone via FTP/Webdav is easy and all the metadata sticks."
gocept homepage - Plone Instant Messenger
http://www.gocept.com/angebot/opensource/PloneIM
"PloneIM is an addon for Plone which allows instant messaging with an ICQ-like UI."