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 https://davdroid.bitfire.at/source/. (now at known as DAVx⁵ https://gitlab.com/bitfireAT/davx5-ose)
Forked from DavDroid Version 184.108.40.206-ose
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.
Parts of OpenSync have been outsourced into these libraries (based on orginal davdroid):
- cert4android – custom certificate management
- dav4android – WebDAV/CalDav/CardDAV framework
- ical4android – iCalendar processing and Calendar Provider access
- vcard4android – VCard processing and Contacts Provider access
Extra libraries are used (based on orginal davdroid) :