Horde

Horde is an Open Source Groupware. Recent releases support CalDAV and CardDAV.

Setup

CalDAV-Sync

• Server URL: <server>/horde/rpc.php/principals/<email address>/
• Use SSL: check accordingly
• Username: your login
• Password: your password

CardDAV-Sync

• Server URL: <server>/horde/rpc.php/principals/<email address>/
• Use SSL: check accordingly
• Username: your login
• Password: your password

known issues

time zone issue

At present (2013-07-04) there is a known issue with time zones in Horde. Events created in Horde are exported with ambiguous time zone information:

DTSTART;TZID=Europe/Athens:20111117T200000Z
DTEND;TZID=Europe/Athens:20111117T204501Z

The "Z" means the time zone is UTC, but there is a TZID too that says the time zone is Europe/Athens.

calendar discovery doesn't work

If calendar discovery doesn't work with the path above, ensure you've updates all important libraries. Here is what a user reported (thanks Nicolas):

Horde users should use imp 6.1.2 or newer version and kronolith 4.1.1 or
newer version for be able to list Calendars and Tasks lists using
Account URL.