CalDAV server implementation

supported implementation

Apple iCal Server

Commercial macOS Server, also Open source/cross-platform

Implementation of CalDAV Access and Scheduling. Available as part of the macOS Server software. Also open source. Python-based.

Bynari Collaboration Suite

Commercial Collaboration Suite

BCS (Bynari Collaboration Suite) is a complete groupware/messaging suite which includes CalDAV support.

Baïkal

Open Source

Baïkal is a Cal and CardDAV server, based on sabre/dav.

Bedework

Open source/cross-platform

Implementation of CalDAV Access and Scheduling. Java-based. Includes a Web UI.

Chandler Server (Cosmo)

Open Source

Java-based server that includes support for CalDAV. Created from the chandler project, now supported by 1&1

Communigate Pro

Commercial

Implementation of CalDAV Access and Scheduling as part of unified messaging server.

DAVical

Open Source/PHP/PostgreSQL

Implementation of CalDAV Access and Scheduling with web-based administration.

DPCalendar

GPL/Joomla

DPCalendar allows CalDAV access to its event system on your Joomla site.

DavMail

Open Source/Java

DavMail is a POP/IMAP/SMTP/Caldav/LDAP exchange gateway allowing users to use any mail/calendar client with an Exchange server through Outlook Web Access.

Daylite CalDAV Server

Commercial CalDAV Server

Daylite is a commercial CalDAV server

EGroupware

Free Trial period

EGroupware is an enterprise ready groupware server that includes CalDAV support.

EVO Mail Server

Shareware/Trial Period

CalDAV and CardDAV support.

Fennel

Open Source/JavaScript

Fennel is a lightweight CardDAV / CalDAV server. It is completely written in JavaScript and runs within a Node.js instance.

Kerio Connect

Commercial

Implementation of CalDAV Access and Scheduling as part of unified messaging server.

OX App Suite

Open Source/Commercial/Cross Platform

The number one open cloud service platform that provides open standard interfaces such as CalDAV/CardDAV/WebDAV/IMAP/PGP/… to all it services such as unified email, calendar, cloud storage, security, collaboration and much more.

Oracle Communications Calendar Server

Commercial

Implementation of CalDAV Access and Scheduling. Formerly Sun Java Calendar Server.

ownCloud

Open Source

ownCloud is an open source, simple cloud server, providing WebDAV, CalDAV, CardDAV, etc. It’s written in PHP and can use SQLite or MySQL databases. So it runs under Windows, Linux, etc.

Radicale

Open source / Cross platform

Radcale is an open source cross-platform CalDAV and CardDAV server written in Python. It requires few software dependencies and is pre-configured to work out-of-the-box.

sabre/dav

Open Source

SabreDAV is a free WebDAV server and includes support for CalDAV.

ScalableOGo

Open Source

ScalableOGo (SOGo) is a free groupware server and includes support for CalDAV.

Scalix

Commercial/Open Source

Implementation of CalDAV Access and Scheduling.

Zimbra

Commercial/Open Source

Implementation of CalDAV Access and Scheduling.

Xandikos

Open source/cross-platform

Xandikos is a lightweight free WebDAV server that includes support for CalDAV.

unsupported implementation

Dingo Calendar Server

Open Source/Perl/CGI

Dingo is a CalDAV compatible server using MySQL, written in Perl as a CGI script.

Status uncertain; appears to have been abandoned since 2008

ModCalDAV

Open source/cross-platform

Apache plugin implementing CalDAV Access.

Status uncertain; appears to have been abandoned since 2013

Synovel Collabsuite

Commercial/Linux

Synovel Collabsuite is an open source technology based mail and collaboration software. It provides comprehensive Linux mail server with calendaring (CalDAV) and instant messaging functionality for enterprise.

Status uncertain; appears to have been abandoned since 2009

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