I haven't thought about using a CalDAV server for this at all actually. How do you envision that working?
The backend of this is pluggable so it can use other datastores.
The backend of this is pluggable so it can use other datastores.
If you sync a 2Do app instance with SabreDAV, you can see that the 2Do developers have added app-specific fields to the standard schema, to store text notes, audio attachments and app-specific metadata, without losing interoperability.
CalDAV clients: http://caldav.calconnect.org/implementations/clients.html
CalDAV libraries: http://caldav.calconnect.org/implementations/librariestools....