Add sabre/dav

Add sabre/dav to Calendar und Address Books section. sabre/dav is the framework behind fruux, ownCloud atmail and many more.
9 years ago · 874357c26f
1 changed files with 1 additions and 0 deletions
--- a/README.md
+++ b/README.md
@ -121,6 +121,7 @@ Some [Groupware](#groupware) solutions also feature calendar/address book editin
  * [calypso](http://keithp.com/calypso/) - a python-based CalDAV/CardDAV server
  * [DAViCal](http://www.davical.org/) - a server for calendar sharing (CalDAV)
  * [Radicale](http://radicale.org/) - A Simple Calendar and Contact Server
+  * [sabre/dav](http://sabre.io/) -  A open source CardDAV, CalDAV and WebDAV server.

 ## Communication systems