I would love to have more client software available to test DAViCal against, but so far these are the only ones I have access to.
If you want to point me at more free software that supports CalDAV, or send me free copies of such proprietary software, then I will add it to the list as well as make DAViCal work with it.
In the general CalDAV terminology, client software will want to know several facts about the CalDAV server. Some (like iCal and iOS) will try and discover these facts for themselves, and others (like Lightning and Evolution) will require you to enter some information. When they ask for that information they will be asking for the following things:
Typically the answers, in DAViCal's case, are:
There could well be a wider range of information about many and varied client software on the DAViCal Wiki as well.