vCard Extensions to WebDAV (CardDAV) is an address book client/server protocol designed to allow users to access and share contact data on a server.
The CardDAV protocol was developed by the IETF and was published as RFC 6352 in August 2011. CardDAV is based on WebDAV, which is based on HTTP, and it uses vCard for contact data.
The specification has been proposed as a standard by IETF as the RFC 6352 in August 2011 by C. Daboo from Apple Inc.
The following products implement the server-side portion of the CardDAV protocol:
Apple Contacts Server.
Atmail, a email and groupware server, supporting the CardDAV protocol.
Baïkal, a lightweight CalDAV + CardDAV server
CommuniGate Pro supports CardDav protocol.
DAViCal supports CardDAV from version 0.9.9.2
ContactOffice online collaboration suite supports CardDAV.
Contactzilla allows access to user's address books via CardDAV.
EVO Mail Server, a mail server software, supporting CardDAV
fruux, a synchronization service, supporting CardDAV
GMail and Google Contacts allow access to user's address book via CardDAV.
Group-Office, an open-source groupware and CRM application
Horde Groupware, a complete web-based groupware solution with CalDAV and CardDAV support.
Meishi, a standalone, Ruby on Rails based CardDAV server
Memotoo, a synchronization service, supporting CardDAV
Oracle Communications Contacts Server
ownCloud supports CardDAV protocol since version 2.0.
Radicale, open source CalDAV CardDAV server written in Python
SabreDAV, a WebDAV framework for PHP, supports CardDAV since version 1.5.
SOGo supports CardDAV access to its address books.
sync•gw allows synchronization of any address book using CardDAV.
Zimbra 6 allows access to its address book via CardDAV.
SYNOLOGY DSM 6.0 supports CardDAV.
The following products implement the client-side portion of the CardDAV protocol:
Apple Contacts starting from Mac OS X Snow Leopard and higher.
Apple iOS, starting from iOS 4.
Atmail supports a complete CardDAV client via a Webmail and mobile interface
BusyContacts for OS X El Capitan or later
Bynari WebDAV Collaborator, a plug-in for synchronizing CalDAV and CardDAV data to Outlook with most DAV servers.
Blackberry devices running QNX - Blackberry 10+ phones, Playbook OS 2.0+ tablets
CardDavMATE, open source HTML5+Javascript CardDAV client (web application)
CardDav-Sync for Android
CardDAV PHP, open source PHP CardDAV Client
ContactSync for Android
Contacts CardDAV Sync 2 Cloud for Android
DAVdroid for Android 4+
EVO Collaborator for Outlook, sync Outlook contacts, calendars and tasks with CardDAV and CalDAV servers
InfCloud, open source HTML5+Javascript CalDAV/CardDAV client (web application)
KDE Software Compilation 4.5 will feature CardDAV client support, due in August 2010. It will be available for use by Kaddressbook, which is part of Kontact PIM suite. It will be provided by Akonadi: a PIM server which will also make the data available to other applications.
Kerio Connect
Outlook CalDav Synchronizer (open source) adds CalDAV and CardDAV support to Microsoft Outlook
Sailfish OS, the OS of the Jolla phones and tablet (since 2015)
SurGATE Outlook Sync Client, supports a complete CardDAV and CalDAV client for Outlook
Thunderbird, via the SOGo Connector or the CardBook add-on
