In collaboration with the KDE PIM project, the
OpenGroupware.org project has developed a generic
groupware exchange protocol (client/server) based on free
and open standards, such as HTTP, WebDAV, iCal and
vCard. This protocol was named GroupDAV [1], server
implementations exist within ZideStore, the
OpenGroupware.org integration server, client
implementations exist within Novell's Evolution and KDE's
Kontact.
I believe it would be a great enhancement if there was a
multisync plugin that could speak the GroupDAV protocol.
References:
[1] GroupDAV initial draft:
http://www.groupdav.org/draft-hess-groupdav-01.txt