If you just care about calendars and contacts there is single-purpose CalDAV/CardDAV server software you can use. I setup Baïkal recently and got OS X and iOS s

If you just care about calendars and contacts there is single-purpose CalDAV/CardDAV server software you can use. I setup Baïkal recently and got OS X and iOS syncing with it without any problems. I haven't started migrating my existing contacts and calendars to it yet, though. Baïkal http://baikal-server.com/ http://baikal-server.com/ Radicale http://radicale.org/ http://radicale.org/ DAViCal http://www.davical.org/ http://www.davical.org/