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Communications protocol
OSI layer Application
Port(s) 80, 443
RFC(s) RFC 6352

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 has been published as RFC 6352 in August 2011.[1] CardDAV is based on WebDAV, which is based on HTTP, and it uses vCard for contact data.[2]



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:


The following products implement the client-side portion of the CardDAV protocol:

  • Apple Contacts starting from Mac OS X Snow Leopard and higher.[19]
  • Apple iOS, starting from iOS 4.[20]
  • Atmail supports a complete CardDAV client via a Webmail and mobile interface[21]
  • Bynari WebDAV Collaborator, a plug-in for synchronizing CalDAV and CardDAV data to Outlook with most DAV servers.[22]
  • Blackberry devices running QNX - Blackberry 10+ phones, Playbook OS 2.0+ tablets
  • CardDavMATE, open source HTML5+Javascript CardDAV client (web application)[23]
  • CardDav-Sync for Android[24]
  • CardDAV PHP, open source PHP CardDAV Client[25]
  • ContactSync for Android[26]
  • Contacts CardDAV Sync 2 Cloud for Android[27]
  • DAVdroid for Android 4+[28]
  • EVO Collaborator for Outlook, sync Outlook contacts, calendars and tasks with CardDAV and CalDAV servers[29]
  • Evolution - Works as WebDAV contacts.
  • InfCloud, open source HTML5+Javascript CalDAV/CardDAV client (web application)[30]
  • 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.[31]
  • Kerio Connect[3][32]
  • Outlook CalDav Synchronizer (open source) adds CalDAV and CardDAV support to Microsoft Outlook[33]
  • 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[34]
  • Thunderbird, via the SOGo Connector[35]

See also


  1. "CardDAVResources". CalConnect. Retrieved April 10, 2010.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  2. "CardDAV: Related Standards". CalConnect. Retrieved April 11, 2010.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  3. 3.0 3.1 "Implementations: CardDAV Servers". CalConnect. Retrieved April 10, 2010.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  4. "Mac OS X Server: Address Book Server". Apple. Retrieved April 10, 2010.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  5. "Baïkal lightweight CalDAV+CardDAV server". Retrieved December 11, 2013.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  6. "CommuniGate Pro support of CardDav". Retrieved April 21, 2011.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  7. "DAViCal release". Freshmeat. Retrieved September 24, 2010.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  8. "Contact synchronization using CardDAV". Retrieved March 3, 2014.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  9. "ZillaSync: Get your contacts on the move with CardDAV". Contactzilla. Retrieved December 17, 2013.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  10. Ellingson, Jeff (September 27, 2012). "A new way to sync Google Contacts". Google. Retrieved September 27, 2012.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  11. Horde Groupware
  12. "Meishi". GitHub. Retrieved March 30, 2012.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  13. "Radicale Website". Retrieved April 4, 2014.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  14. "SabreDAV 1.5 released with CardDAV support". dmfs. Retrieved September 11, 2011.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  15. "SOGo: Features". Inverse Inc.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  16. "sync•gw".<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  17. Yoon Lee, Jong (September 25, 2009). "Zimbra Server: CardDAV server". Zimbra/VMWare Inc. Retrieved April 24, 2010.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  18. AEM (September 2014). "Synology DSM: CardDAV server". SYNOLOGY.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  19. "Implementations: CardDAV Clients". CalConnect. Retrieved April 10, 2010.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  20. Eran Dilger, Daniel (June 25, 2010). "iPhone 4 and iOS vs. Android: desktop and cloud services". AppleInsider. Retrieved July 24, 2010.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  21. "Atmail Client: CardDAV interface". Atmail. Retrieved May 26, 2010.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  23. "CardDavMATE". Ján Máté. Retrieved March 8, 2013.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  24. "CardDav-Sync". Marten Gajda. Retrieved November 1, 2012.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  25. "CardDAV PHP". Christian Putzke. Retrieved October 23, 2012.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  26. ContactSync
  27. Contacts CardDAV Sync 2 Cloud
  28. "DAVdroid". bitfire web engineering. Retrieved January 25, 2014.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  29. "CalDAV/CardDAV Support for Outlook 2007-2013". EVO software production.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  30. "InfCloud". Ján Máté. Retrieved March 18, 2015.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  31. Koenig, Tobias (February 4, 2010). "CalDAV/CardDAV/GroupDAV Support for Akonadi". Blogspot. Retrieved April 24, 2010.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  32. "Kerio Connect". Kerio Technologies. Retrieved April 10, 2010.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  33. Outlook CalDav Synchronizer
  34. "CalDAV/CardDAV Support for MS Outlook". SurGATE Labs.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  35. "SOGo: Frontends". Inverse Inc. April 17, 2013. Retrieved October 4, 2013.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>

External links