Hi, I read a lot of CalDavZAP and tried to use ist. But it's not possible for me. I used a lot of hours to search and get a working configuration[e.g. [1,2,3]. Or better some example configurations. But I can't find any help. So I wanna ask you. Available on the website [4]: "Tested with the following CalDAV servers: DAViCal, OS X server, Cyrus IMAP CalDAV (beta), SabreDAV, Baïkal, Radicale (>=0.8) and Oracle Communications Calendar Server" Well, the questions is: How does it works and what setup/config was used? Can anyone help me for this? CalDavZAP 0.10.0.1: I use Radicale (0.8 and tried also git version) with htpasswd for user authentication, added header information in radicale config and tried some different configurations for CalDavZAP. [...] [auth] type = htpasswd htpasswd_encryption = sha1 [headers] Access-Control-Allow-Origin = * Access-Control-Allow-Methods = DELETE, HEAD, GET, LOCK, MKCALENDAR, MKCOL, MOVE, OPTIONS, POST, PROPFIND, PROPPATCH, PUT, REPORT, UNLOCK Access-Control-Allow-Headers = User-Agent, Authorization, Content-type, Depth, If-match, If-None-Match, Lock-Token, Timeout, Destination, Overwrite, X-client, X-Requested-With Access-Control-Expose-Headers: Etag When I'll start with CardDavMATE, I think, the problem will be similar. Best regards, Frank [1] http://librelist.com/browser//radicale/2013/3/30/known-working-web-clients/ [2] http://www.inf-it.com/mlmmj/davclients/2013-10/0000001.html [3] http://www.inf-it.com/mlmmj/davclients/2013-12/0000013.html [4] http://www.inf-it.com/open-source/clients/caldavzap/