To sync contacts and events with your Mac you need to create a new CardDAV (contacts) and a new CalDAV (calendar) account. Setting up CardDAV and CalDAV accounts on OS X Once the apps are installed, you’re already able to use the calendar and adress book via the web interface. This can be done in the main menu (+ Apps) in the upper left part of the screen. In addition to the default OwnCloud installation, you need to install the apps for calendar and contacts. However, if you’re trying to install OwnCloud at the German webhoster Strato, take a look at my blog post on how to install OwnCloud 9 at Strato (German only). There is lots of good documentation on this, so I won’t cover the installation here. Obviously, you will need to install OwnCloud first. I’ll share how I did it, along with some tips and tricks in this blog post. The bad news: getting the synchronization up and running is not always as straightforward as expected. I didn’t want to use iCloud or Google anymore and OwnCloud promised to be a great alternative.
I’ve recently installed OwnCloud 9 to sync my calendar and contacts between my Mac and Android phone.