Comparison of CalDAV and CardDAV implementations
Client implementations
{{sort-under}}
class="wikitable sortable sort-under" style="font-size: 85%; text-align: center; width: 100%;" |
Client name
! Platform ! License ! WebDAV ACL editor ! [https://tools.ietf.org/html/rfc3744#section-9.4 Discovery of other user’s collections] ! ICalendar tasks ! ICalendar journals ! [https://tools.ietf.org/html/rfc7953 ICalendar VAVAILABILITY (RFC 7953)] ! [https://tools.ietf.org/html/6638 CalDAV Scheduling] ! CardDAV ! [https://tools.ietf.org/html/rfc6350#section-7 vCard Synchronization] ! .well-known URLs ! [http://www.calconnect.org/pubdocs/CD0903%20Freebusy%20Read%20URL.pdf FBURL] ! DNS SRV ! handles home-sets |
---|
{{rh}} | AgenDAV[https://github.com/agendav/agendav AgenDAV project home]
| Cross-platform JavaScript Web browser | {{GPL-lic}} | {{yes}} limited | {{no}} | {{yes}} | {{n/a}} | {{unk}} | {{no}} | {{no}} Does not arrange meetings with participants | {{n/a}} | {{D-Out}} of scope | AgenDAV's fullcalendar.io | {{no}} | {{no}} The used server is fixed in the configuration file | {{no}} Does not arrange meetings with participants | {{no}} the caldav-server settings need to be fixed in AgenDAV's configuration file | {{yes}} |
{{rh}} | Cadaver{{Cite web |url=http://www.webdav.org/cadaver/ |title=Cadaver home |access-date=2015-03-11 |archive-url=https://web.archive.org/web/20150312225036/http://www.webdav.org/cadaver/ |archive-date=2015-03-12 |url-status=dead }}
| {{GPL-lic}} | {{unk}} | {{unk}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | aCal{{cite web |url=http://wiki.acal.me/wiki/Main_Page |title=Main Page - ACal Wiki |publisher=Wiki.acal.me |date=2013-04-01 |accessdate=2015-12-23 |archive-url=https://web.archive.org/web/20151224104635/http://wiki.acal.me/wiki/Main_Page |archive-date=2015-12-24 |url-status=dead }}
| Android | {{GPL-lic}} | {{unk}} | {{unk}} | {{yes}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{n/a}} | {{unk}} | aCal | {{yes|aCal}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | AndroidCaldavSyncAdapater{{cite web|url=https://github.com/gggard/AndroidCaldavSyncAdapater |title=gggard/AndroidCaldavSyncAdapater ¡ GitHub |publisher=Github.com |date= |accessdate=2015-12-23}}
| Android | {{GPL-lic}} | {{unk}} | {{unk}} | {{yes}} | {{n/a}} | {{unk}} | {{unk}} | {{unk}} | {{n/a}} | {{D-Out}} of scope | Android | {{yes|Google Play}} | {{unk}} | {{D-Out}} of scope | {{unk}} | {{unk}} |
{{rh}} | CalDavZAP[http://www.inf-it.com/open-source/clients/caldavzap/ CalDavZAP]
| Cross-platform JavaScript Web browser | {{free|AGPL}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{unk}} | {{no}} | {{no}} Does not arrange meetings with participants | {{n/a}} | {{D-Out}} of scope | CalDavZAP | {{no}} | {{no}} The used server is fixed in the configuration file | {{no}} Does not arrange meetings with participants | {{no}} The used server is fixed in the configuration file | {{yes}} |
{{rh}} | CardDavMATE[http://www.inf-it.com/open-source/clients/carddavmate/ CardDavMATE]
| Cross-platform JavaScript Web browser | {{free|AGPL}} | {{no}} | {{no}} | {{D-Out}} of scope | {{D-Out}} of scope | {{D-Out}} of scope | {{D-Out}} of scope | {{D-Out}} of scope | {{yes}} vCard 3.0 only | {{no}} | CardDavMATE | {{no}} | {{no}} The used server is fixed in the configuration file | {{D-Out}} of scope | {{no}} The used server is fixed in the configuration file | {{yes}} |
{{rh}} | InfCloud (CalDavZAP+CardDavMATE)[http://www.inf-it.com/open-source/clients/infcloud/ InfCloud (integrated version of CalDavZAP and CardDavMATE)]
| Cross-platform JavaScript Web browser | {{free|AGPL}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{unk}} | {{no}} | {{no}} Does not arrange meetings with participants | {{yes}} vCard 3.0 only | {{no}} | InfCloud | {{no}} | {{no}} The used server is fixed in the configuration file | {{no}} Does not arrange meetings with participants | {{no}} The used server is fixed in the configuration file | {{yes}} |
{{rh}} | Chandler Desktop[http://chandlerproject.org/ Chandler Project] {{webarchive |url=https://web.archive.org/web/20070830144410/http://chandlerproject.org/ |date=August 30, 2007 }}
| {{free|Apache}} | {{unk}} | {{unk}} | {{yes}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{no}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | DAVx⁵[https://www.davx5.com/ DAVx⁵ website]
| Android | {{GPL-lic}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{D-Out}} of scope | {{No}} (except attendees/invitations) | {{yes}} | {{no}} ([https://manual.davx5.com/technical_information.html#synchronization server always wins]) | Android, OpenTasks | {{yes|Google Play, OpenTasks}} | {{yes}} | {{D-Out}} of scope | {{yes}} | {{yes}} |
{{rh}} | Tasks.org[https://tasks.org/ Tasks.org website]
| Android | {{GPL-lic}} | {{no}} | {{no}} | {{no}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | Android | {{yes|Google Play}} | {{yes}} | {{no}} | {{no}} | {{yes}} |
{{rh}} | jqCalDAV[http://boxacle.net/jqcaldav/ jqCalDAV project home]
| Cross-platform JavaScript Web browser | {{free|MIT}} | {{unk}} | {{unk}} | {{yes}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{n/a}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | KCardDAV[http://code.google.com/p/kcarddav/ KCardDAV project home] (discontinued)
| Cross-platform Kontact add-on | {{GPL-lic}} | {{unk}} | {{unk}} | {{n/a}} | {{n/a}} | {{n/a}} | {{unk}} | {{unk}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | KOrganizer, KAddressBook, Kontact
| {{GPL-lic}} | {{unk}} | {{unk}} | {{yes}} | {{yes}} | {{yes}} | {{unk}} | {{unk}} | {{yes}} | {{unk}} | KOrganizer KAddressbook | {{yes|KOrganizer KAddressbook}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | Lightning[https://www.mozilla.org/projects/calendar/lightning/ Lightning - Project Home]
| Cross-platform Thunderbird Add-on | {{unk}} | {{unk}} | {{yes}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{n/a}} | {{D-Out}} of scope | Lightning | {{yes|Lightning}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} probably not |
{{rh}} | CardBook[https://gitlab.com/CardBook/CardBook CardBook source]
| Cross-platform Thunderbird Add-on | {{free|MPL}} | {{no}} | {{no}} | {{D-Out}} of scope | {{D-Out}} of scope | {{D-Out}} of scope | {{D-Out}} of scope | {{D-Out}} of scope | {{yes}} vCard 3.0 and vCard 4.0 | {{yes}} | CardBook | [https://addons.thunderbird.net/thunderbird/addon/cardbook/ Mozilla Add-ons (ATN)] | {{yes}} | {{D-Out}} of scope | {{no}} | {{partial}} |
{{rh}} | MineTime[https://minetime.ai MineTime features]
| {{proprietary}} | {{no}} | {{no}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | MineTime | minetime.ai | {{no}} | {{no}} | {{no}} |
{{rh}} | Mulberry[http://www.davical.org/clients.php?client=Mulberry Mulberry client configuration]
| {{free|Apache}} | {{unk}} | {{unk}} | {{yes}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | Outlook CalDav Synchronizer[https://caldavsynchronizer.org/ Outlook CalDav Synchronizer website]
| Windows | {{free|AGPL}} | {{unk}} | {{unk}} | {{yes}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{yes}} | {{unk}} | Outlook | {{unk}} | {{yes}} | {{unk}} | {{yes}} | {{yes}} |
{{rh}} | pyCardDAV[http://lostpackets.de/pycarddav/ pyCardDAV project home]
| {{free|MIT}} | {{unk}} | {{unk}} | {{n/a}} | {{n/a}} | {{n/a}} | {{unk}} | {{unk}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | The Bat![https://www.ritlabs.com/en/products/thebat/features.php The Bat! - Features]
| Windows | {{proprietary}} | {{unk}} | {{unk}} | {{no}} | {{no}} | {{no}} | {{unk}} | {{unk}} | {{yes}} | {{unk}} | The Bat! | {{yes|The Bat!'s address book}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | Inverse SOGo Connector-Integrator[https://sogo.nu/about.html SOGo Overview]
| Cross-platform Thunderbird Add-on | {{unk}} | {{unk}} | {{yes}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{yes}} | {{unk}} | Mozilla | {{yes|Mozilla Add-ons}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | Evolution
| {{GPL-lic}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{yes}} vCard 3.0 only | {{unk}} | Evolution | {{yes|Evolution}} | {{yes}} | {{yes}} if the URL does not require authentication | {{yes}} | {{yes}} |
{{rh}} | ReminderFox[http://www.reminderfox.org/ ReminderFox project home]
| {{free|MPL 1.1}} | {{unk}} | {{unk}} | {{yes}} | {{yes}} | {{unk}} | {{unk}} | {{no}} | {{n/a}} | {{unk}} | ReminderFox | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} |
There are more clients, mentioned for completeness:
- For the command line: [https://github.com/pimutils/vdirsyncer Vdirsyncer] (for WebDAV) + [https://github.com/pimutils/khal Khal] (for calendaring) or + [https://github.com/scheibler/khard Khard] (for contacts)
- Apple's [https://support.apple.com/downloads/ical iCal] and [https://support.apple.com/guide/calendar/welcome/mac Calendar]
- For Windows and Mac [https://www.emclient.com/ eM Client]
- Windows built in-support ([https://www.ctrl.blog/entry/how-to-win10-webdav-syncengine kind of])
- For the Web: [https://www.horde.org/apps/kronolith Kronolith]
- For Android: [http://dmfs.org/caldav/ CalDAV Sync], [http://dmfs.org/carddav/ CardDAV Sync], [http://www.drlue.tk/ical/?page_id=124 iCal Import/Export CalDAV]
Server implementations
{{sort-under}}
class="wikitable sortable sort-under" style="font-size: 85%; text-align: center; width: 100%;" |
style="vertical-align:top"
! Server name ! License ! {{IETF RFC|2616}} HTTP/1.1 ! {{IETF RFC|2617}} HTTP {{abbr|auth.|authentication}} ! {{IETF RFC|2518}} WebDAV ! {{IETF RFC|3253}} WebDAV {{abbr|vers.|versioning}} ! {{IETF RFC|3744}} WebDAV ACL ! {{IETF RFC|4324}} iCal {{abbr|CAP|Calendar Access Protocol}} ! {{IETF RFC|4331}} WebDAV quota ! {{IETF RFC|4709}} WebDAV mount ! {{IETF RFC|4791}} CalDAV ! {{IETF RFC|4918}} WebDAV {{abbr|ext.|extensions}} ! {{IETF RFC|5397}} WebDAV current principal ! {{IETF RFC|5545}} {{abbr|rev.|revised}} iCal (Availability Check) ! {{IETF RFC|5546}} iCal {{abbr|iTIP|transport-independent interoperability protocol}}(Group Scheduling) ! {{IETF RFC|5689}} WebDAV {{abbr|ext.|extended}} MKCOL ! {{IETF RFC|5995}} WebDAV POST add member ! {{IETF RFC|6352}} CardDAV vCard ! {{IETF RFC|6578}} WebDAV {{abbr|sync|synchronise}} ! {{IETF RFC|6638}} CalDAV {{abbr|sched.|scheduling}}(Auto-Schedule) ! {{IETF RFC|7529}} iCal {{abbr|RSCALE|non-Gregorian calendar}} ! {{IETF RFC|7540}} HTTP/2 ! {{IETF RFC|7809}} CalDAV time zones by {{abbr|ref.|reference}} ! {{IETF RFC|7953}} iCal {{abbr|VAVAILABILITY|personal availability}} ! [http://www.calconnect.org/pubdocs/CD0903%20Freebusy%20Read%20URL.pdf Free-busy URL] |
{{rh}} | Baïkal{{cite web |url=https://sabre.io/baikal/ |title=Baïkal |accessdate=2021-03-10 }}[http://tech.tiq.cc/2013/10/how-to-set-up-the-baikal-carddav-and-caldav-server-with-nginx-on-debian/ Baïkal iCal export]
| {{GPL-lic}} | PHP | {{yes}} {{r|group=Note|PHP_HTTP}} | {{yes}} | {{yes}} | {{no}} | {{Some}} | {{no}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{no}} | {{yes}} | {{unk}} | {{yes}} {{r|group=Note|PHP_HTTP}} | {{unk}} | {{unk}} | {{yes}} |
---|
{{rh}} | Bedework[https://www.apereo.org/projects/bedework Bedework overview]
| {{free|Apache}} | Java | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{yes}} | {{unk}} | {{unk}} | {{yes}} | {{yes}} | {{unk}} | {{unk}} | {{yes}} | {{yes}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | Calendar and Contacts Server{{Cite web |url=http://trac.calendarserver.org/wiki/docs-trunk |title=Calendar and Contacts Server guiding standards |access-date=2012-03-11 |archive-url=https://web.archive.org/web/20120101122938/http://trac.calendarserver.org/wiki/docs-trunk |archive-date=2012-01-01 |url-status=dead }}
| {{free|Apache}} | Python | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{unk}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{unk}} | {{yes}} | {{yes}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | Calypso[http://keithp.com/calypso/ Calypso]
| {{GPL-lic}} | Python | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{unk}} | {{no}} | {{unk}} | {{no}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | Cyrus IMAP[https://www.cyrusimap.org/imap/concepts/features.html Cyrus IMAP Features]
| {{free|BSD}} | C | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} |
{{rh}} | DAViCal[http://wiki.davical.org/w/RFC_Compliance DAViCal RFC Compliance][https://gitlab.com/davical-project/davical/-/blob/master/ChangeLog DAViCal ChangeLog]
| {{GPL-lic}} | PHP | {{yes}} {{r|group=Note|PHP_HTTP}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{unk}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{unk}} | {{yes}} {{r|group=Note|PHP_HTTP}} | {{unk}} | {{yes}} | {{yes}} |
{{rh}} | DavMail[http://davmail.sourceforge.net/ DavMail project home]
| {{GPL-lic}} | Java | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | Fennel[https://github.com/LordEidi/fennel/ Fennel on GitHub]
| {{free|GNU GPLv3}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | Group-Office[https://www.group-office.com Group-Office website]
| {{some|AGPL, proprietary}} | PHP | {{yes}} {{r|group=Note|PHP_HTTP}} | {{yes}} | {{yes}} | {{unk}} | {{Some}} | {{unk}} | {{unk}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{unk}} | {{yes}} | {{unk}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{yes}} {{r|group=Note|PHP_HTTP}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | Horde Groupware
| {{free|GNU LGPL}} | PHP | {{yes}} {{r|group=Note|PHP_HTTP}} | {{yes}} | {{yes}} | {{no}} | {{Some}} | {{no}} | {{no}} | {{unk}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{yes}} {{r|group=Note|PHP_HTTP}} | {{no}} | {{no}} | {{no}} |
{{rh}} | Nextcloud[https://nextcloud.com/ Nextcloud home]
| {{free|AGPL v3}} | PHP | {{yes}} {{r|group=Note|PHP_HTTP}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{yes}} {{r|group=Note|PHP_HTTP}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | Open Xchange
| {{GPL-lic}}, CC | Java, JavaScript | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | ownCloud[http://owncloud.org/ ownCloud home]
| {{free|AGPL v3}} | PHP | {{yes}} {{r|group=Note|PHP_HTTP}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{yes}} {{r|group=Note|PHP_HTTP}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} |[https://radicale.org Radicale]{{cite web |url=http://radicale.org/ |title=A Simple Calendar and Contact Server |accessdate=2015-11-20}}
| {{GPL-lic}} | Python | {{yes}} | {{yes}} | {{Some}} | {{no}} | {{Some}} | {{no}} | {{No}} | {{no}} | {{Some}} | {{Some}} | {{Some}} | {{no}} | {{Some}} | {{no}} | {{No}} | {{Some}} | {{Yes}} | {{no}} | {{No}} | {{yes}} {{r|group=Note|PHP_HTTP}} | {{No}} | {{No}} | {{No}} |
{{rh}} | SabreDAV[http://sabre.io/dav/standards-support/ SabreDAV Supported RFC's]
| {{free|BSD}} | PHP | {{yes}} {{r|group=Note|PHP_HTTP}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{unk}} | {{yes}} {{r|group=Note|PHP_HTTP}} | {{unk}} | {{yes}} | {{unk}} |
{{rh}} | SOGo[https://sogo.nu/about.html SOGo Overview]
| {{GPL-lic}} | {{yes}} | {{yes}} | {{unk}} | {{unk}} | {{some}}[https://sogo.nu/bugs/view.php?id=3283 0003283: (read-only) Addressbook reports DAV:all privilege][https://sogo.nu/bugs/view.php?id=4822 0004822: Calender advertises wrong ACL for shared address books] | {{unk}} | {{unk}} | {{unk}} | {{some}}[https://sogo.nu/bugs/view.php?id=1310 0001310: CaldDAV calendar-query returns events out of specified range][https://sogo.nu/bugs/view.php?id=3161 0003161: Blackbery 10 can't edit event that was posted by KOrganizer (CalDAV)] | {{unk}} | {{unk}} | {{some}}[https://sogo.nu/bugs/view.php?id=1204 0001204: update the icalendar handling to rfc 5545][https://sogo.nu/bugs/view.php?id=4747 0004747: SOGo creates invalid GEO value on import][https://sogo.nu/bugs/view.php?id=3608 0003608: Cannot save/display multiple calendar alerts for one calendar event.][https://sogo.nu/bugs/view.php?id=2574 0002574: No colors selectable if ressource ID contains space character] | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{some}}[https://sogo.nu/bugs/view.php?id=5163 0005163: no carddav RFC 6578 compliance] | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | [https://www.xandikos.org/ Xandikos]{{cite web |url=http://xandikos.org/ |title=Git-Backed CalDAV/CardDAV server |accessdate=2022-06-06}}[https://www.xandikos.org/ Xandikos]
| {{GPL-lic}} | Python | {{yes}} | {{yes}} | {{yes}} | {{some}} | {{some}} | {{no}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{unk}} | {{yes}} | {{no}} | {{no}} | {{unk}} |
{{rh}} | Zarafa
| {{some|AGPL, proprietary}} | PHP | {{yes}} {{r|group=Note|PHP_HTTP}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | Read only | {{unk}} | {{unk}} | {{unk}} | {{yes}} {{r|group=Note|PHP_HTTP}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | Zentyal{{Cite web |url=http://www.zentyal.org/ |title=Zentyal Community Edition official Site |access-date=2014-11-28 |archive-url=https://web.archive.org/web/20120918122408/http://www.zentyal.org/ |archive-date=2012-09-18 |url-status=dead }}
| {{GPL-lic}} | Perl | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} |
{{rh}} | Meishi{{Cite web |url=https://github.com/inferiorhumanorgans/meishi |title=Meishi, A lightweight CardDAV server built on Rails 3; GitHub repository |website=GitHub |access-date=2020-10-14 |archive-url=https://web.archive.org/web/20180611032700/https://github.com/inferiorhumanorgans/meishi |archive-date=2018-06-11 |url-status=live }}
| {{BSD-lic}} | Ruby | {{yes}} | {{yes}}'basic' | {{some}}yes | {{some}}no | {{yes}}much of | {{no}} | {{unk}} | {{no}} | {{no}} | {{unk}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{unk}} | {{some}} | {{unk}} | {{no}} | {{no}} | {{unk}} | {{no}} | {{no}} | {{unk}} |
{{rh}} | Zimbra
| {{GPL-lic}} | Java | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{unk}} | {{no}} | {{yes}} | {{unk}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{unk}} | {{yes}} | {{unk}} | {{yes}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} | {{unk}} |
{{reflist|group=Note|refs=
PHP-based servers rely on the underlying web server platform for the implementation of HTTP.
}}
The table is missing Kopano, [http://www.kerio.com/products/kerio-connect Kerio Connect] and Scalix, which are mentioned here for completeness.