New in ((Tiki21)): CalDAV support in Tiki ((Calendar)) via ((SabreDAV)). See also ((CardDAV))
CalDAV URL is http://example.org/tiki-caldav.php but you should point to the base URL and let your CalDAV client auto-detect settings.
Related: ((Webmail))
This development was done as part of ((dev:Email as a first-class citizen))