Server implementation


CalConnect only provides a list of known implementations of CardDAV servers. Any questions regarding installation instructions, configuration or usage need to be provided by the vendor and please visit the product web site to access them.

supported development

Apple Contacts Server

Commercial macOS Server, also Open source/cross-platform

Implementation of CardDAV. Available as part of the macOS Server software. Also open source. Python-based.


Open Source

Baïkal is an open-source, lightweight PHP+SQLite CALDAV+CARDDAV server based on SabreDAV.


Open source/cross-platform

Implementation of CardDAV. Java-based.


Open Source/PHP/PostgreSQL

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


Free trial period

EGroupware is an enterprise ready groupware server that is adding CardDAV support.

EVO Mail Server

Shareware/Trial Period

CalDAV and CardDAV support.

IT Hit Active Directory CardDAV Server

Commercial License

Enables storage of custom attributes in Active Directory, such as instant messengers, birth dates, multiple addresses, etc. without modifying Active Directory schema and a two-way synchronization of Active Directory contacts via CardDAV protocol.

Kerio Connect

Unified messaging server

Implementation of CardDAV. Available as part of the Kerio Connect server software.



Implementation of CardDAV Access and Scheduling as part of secure email service.


Open source / Cross platform

Meishi is a Rails 3 based standalone CardDAV server. It’s designed to be lightweight and simple to configure. Meishi provides both a CardDAV and a simple browser based interface.

messageconcept PeopleSync

Commercial Windows Server

Enterprise CardDAV server with sync agents for Active Directory, Exchange Server, SharePoint, SQL databases, CRM systems etc.

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.


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.


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.


Open Source

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


Open Source

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


Open source/cross-platform

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

unsupported development

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