CalDavZAP is an open source CalDAV web client implementation released under GNU Affero General Public License (version 3.0).

Main features: NEW: demo available at (see the browser requirements below)

Latest stable release: version [2014-04-14] - bug fixes and minor Russian localization fixes (full changelog: changelog.txt)
The source code can be downloaded here:

Fully supported HTML5 browsers: Safari/Mobile Safari, Webkit, iCab, Firefox, Opera (15+) and Chrome
Unsupported browsers: IE

Tested with the following CalDAV servers: DAViCal, OS X server, Cyrus IMAP CalDAV (beta), SabreDAV, Baïkal, Radicale (>=0.8), openCRX and Oracle Communications Calendar Server

For CalDavZAP configuration see comments in config.js

For setup instructions see readme.txt in the zip file.

If you want to subscribe to our mailing list (CardDavMATE + CalDavZAP) send an e-mail to the following address: <davclients+subscribe {at} inf-it {dot} com>
Mailing list archive available at:

For feedback and support, feel free to contact us by email (English, Slovak, Czech or Hungarian please): <caldavzap {at} inf-it {dot} com>
For personal contact you can visit Bratislava :-)