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

CardDAV (short for Card Distributed Authoring and Versioning) 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]


  • History 1
  • Specification 2
  • Implementations 3
    • Server-side 3.1
    • Client-side 3.2
  • See also 4
  • References 5
  • External links 6



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.[3][4]
  • Atmail, a email and groupware server, supporting the CardDAV protocol.
  • Baïkal, a lightweight CalDAV + CardDAV server[5]
  • CommuniGate Pro supports CardDav protocol.[6]
  • DAViCal supports CardDAV from version[7]
  • Contactzilla allows access to user's address books via CardDAV.[8]
  • 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.[9]
  • Group-Office, an open-source groupware and CRM application
  • Horde Groupware, a complete web-based groupware solution with CalDAV and CardDAV support.[10]
  • IT Hit WebDAV Server Engine for .Net a WebDAV sever library for .Net with CardDAV support.
  • Meishi, a standalone, Ruby on Rails based CardDAV server[11]
  • Memotoo, a synchronization service, supporting CardDAV
  • ownCloud supports CardDAV protocol since version 2.0.
  • Radicale [12]
  • SabreDAV, a WebDAV framework for PHP, supports CardDAV since version 1.5.[13]
  • SOGo supports CardDAV access to its address books.[14]
  • sync•gw allows synchronization of any address book using CardDAV.[15]
  • Zimbra 6 allows access to its address book via CardDAV.[16]


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

  • Apple Address Book in Mac OS X v10.6 "Snow Leopard".[17]
  • Apple iOS, starting from iOS 4.[18]
  • Bynari WebDAV Collaborator, a plug-in for synchronizing CalDAV and CardDAV data to Outlook with most DAV servers.[19]
  • Atmail supports a complete CardDAV client via a Webmail and mobile interface[20]
  • Blackberry devices running QNX - Blackberry 10+ phones, Playbook OS 2.0+ tablets
  • CardDavMATE, open source HTML5+Javascript CardDAV client (web application)[21]
  • CardDav-Sync for Android[22]
  • CardDAV PHP, open source PHP CardDAV Client[23]
  • ContactSync for Android[24]
  • Contacts CardDAV Sync 2 Cloud for Android[25]
  • DAVdroid for Android 4+[26]
  • EVO Collaborator for Outlook, sync Outlook contacts, calendars and tasks with CardDAV and CalDAV servers[27]
  • Evolution - Works as WebDAV contacts.
  • Kerio Connect[3][28]
  • 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.[29]
  • Thunderbird, via the SOGo Connector[30]
  • SurGATE Outlook Sync Client, supports a complete CardDAV and CalDAV client for Outlook[31]

See also


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

External links

  • The Internet Engineering Task Force (IETF)
  • CardDAV Resources
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