David.fx

David.fx is a messaging system by Tobit

Setup

CalDAV-Sync

• Server URL: <servername>:<port>
• Use SSL: check accordingly
• Username: your login name
• Password: your password

CardDAV-Sync

• Server URL: <servername>:<port>
• Use SSL: check accordingly
• Username: your login name
• Password: your password

According to Tobit it's possible to sync the global address book with some workaround:

Grundsätzlich lässt sich über die CardDAV Schnittstelle nur die persönlichen Adressen abgleichen. Hier können Sie aber das
öffentlcihe Adressarchiv in das persönliche verknüpfen. Voraussetzung ist hier, dass der Remote Access für das globale
Adressarchiv aktiviert ist und keine Zugangsdaten hinterlegt sind.

However, you should now that they will be merged into your personal addresses on the phone. It's not possible to sync them independently to discrete address books in Android.

known issues

There are several known issues with David.fx. I'll add them step by step whenever I have some time.

CalDAV

• David.fx does not properly respond to the calendar-query report request. It always sends a list of all events instead of the requested range. This causes higher network traffic.

CardDAV

• Some users reported contacts get broken in David.fx when they add a note on the phone. This is a David.fx issue. The only known workaround is: Don't add notes to your contacts.