Hula, open source mail and calendar server, and GroupWare bad.
Nat Friedman announces the launch of Hula, a new project to build an open source mail and calendar server and Rich Web Client, with some different ideas. (but will it allow for Tags and Folksonomies?)
Plus Jamie Zawinski focus them on calendars in Groupware BAD, Users GOOD, Calendars USEFUL, or why Jamie is running a lounge. (which is more than I'm doing)