http://www.fullcalendar.com

http://www.openrecord.org

stealth: a synchronous editor in XUL. For open source release soon.

NoteWiki

EditThisPagePHP

TiddlyWiki

Wikiwyg

ajax im

Paper Airplane and http://paperairplane.us/

P2P Sockets - Network prototype for Paper Airplane

OpenPortal

Notational Velocity

ObWardCunningham stories :-)

Creative Commons RDF

Ethical Public Domain

Internal Skotos web MUD development interface