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.

See ticket #12428

According to the ticked above, this issue has been fixed.

another time zone issue

It has been reported that, instead of importing time zones, Horde seems to drop the time zone silently and assumes the event is in UTC. That results in time offsets if you don't happen to live in GMT+0. The wrong times will sync back to Android as well, because Horde also exports the events with UTC.

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.