We're continuously testing DAVx⁵ with various server software and service providers to improve compatibility. You can find a list of successfully tested services, together with required configuration, here.
See our manual for more information about the Base URL and service discovery.
Please note that things change from time to time and this list is merely informative. For reference, always have a look at the documentation of your server / service provider.
If your server or service provide is not listed there, but seems to be working, please let us know.