OpenSync is a Open Source CalDAV/CardDAV (Contacts and Calendars) Sync for Android
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davdroid update Jul 3, 2017
LICENSE update Jul 3, 2017

OpenSync is a Open Source CalDAV/CardDAV (Contacts and Calendars) Sync for Android. it has been tested with Nextcloud Server. its integrates natively in Android calendar/contact apps. its a fork from opensource project DavDroid

Forked from DavDroid Version


Its licensed under the GPLv3 License. same as davdroid.

Its mine personal attempt to make a Android App for CalDAV/CardDAV for NextCloud (Server which I use), again a OpenSource Software. Its still Beta from my side as its some basic changes to orginal code of DavDroid. Would try to find time to add more into this app. This is noway to replace orginal DavDroid app or compete with them.

If you love this app, I would recommed you to support DAVdroid (the orginal app), please consider donating to DAVdroid or purchasing it.

Parts of OpenSync have been outsourced into these libraries (based on orginal davdroid):


Extra libraries are used (based on orginal davdroid) :