Merge pull request #1249 from tasn/etesync

Add EteSync

README.md

@@ -206,6 +206,7 @@ Some [Groupware](#groupware) solutions also feature calendar/address book editin
   * [CalendarServer](http://trac.calendarserver.org/) - A standards-compliant server implementing the CalDAV and CardDAV protocols. `Apache` `Python`
   * [calypso](http://keithp.com/calypso/) - A python-based CalDAV/CardDAV server. ([Source Code](https://keithp.com/git/calypso.git)) `GPLv3` `Python`
   * [DAViCal](http://www.davical.org/) - A server for calendar sharing (CalDAV). ([Source Code](https://gitlab.com/davical-project/davical)) `MIT` `PHP`
+  * [EteSync](https://www.etesync.com) - Secure, end-to-end encrypted and journaled personal information cloud synchronization for Android and the desktop. Currently contacts and calendars, with more on the way. ([Source Code](https://github.com/etesync/)) `AGPLv3` `Python/Django`
   * [Radicale](http://radicale.org/) - A Simple Calendar and Contact Server. ([Source Code](https://github.com/Kozea/Radicale)) `GPLv3` `Python`
   * [sabre/dav](http://sabre.io/) - A open source CardDAV, CalDAV and WebDAV server. ([Source Code](https://github.com/fruux/sabre-dav)) `MIT` `PHP`
   * [InfCloud](https://www.inf-it.com/open-source/clients/infcloud/) - An open source CalDAV/CardDAV web client implementation. ([Demo](https://www.inf-it.com/infcloud/), [Source Code](https://www.inf-it.com/InfCloud_0.13.1.zip)) `AGPLv3` `Javascript`