Hi everybody, since I couldn't find any CardDAV program for use with mutt, I have hacked together a small (and ugly) python program for accessing a CardDAV resource. I have only tested it with davical so far and it has some more deficiencies (check out the website), but I hope it will still be useful for some of you. If you are interested you can check it out at http://pycarddav.lostpackets.de/ . If you tested it, please do provide feedback.
Regards Christian