List of applications with iCalendar support

This list is incomplete; you can help by expanding it.

The following is a list of applications which support iCalendar:

Free software/Open source

• Balsa a lightweight email client for GNOME
• California a calendar application for GNOME 3 written in Vala
• Chandler
• Citadel
• CiviCRM With its CiviEvent module
• Claws Mail (the vCalendar plugin is required to handle iCalendar in Claws Mail)
• Darwin Calendar Server
• DAViCal server for calendar sharing
• Dolibarr ERP & CRM for calendar module
• Drupal with its event module
• eXo Platform and Open Source Enterprise Social Platform with Group Calendars
• GNOME Calendar a calendar application for GNOME 3 written in C
• Evolution the Gnome email/calendar client
• Hippo CMS
• Horde
• ICSdroid allows to use Webcal feeds with Android
• Joomla there are several plugins available
• Khal, a calendar program for the terminal
• Kontact (namely KOrganizer and KMail)
• Lightning (Mozilla extension for Thunderbird mail/news client and SeaMonkey internet application suite)
• LuxCal An open source web calendar from LuxSoft
• Mozilla Thunderbird mail/news client (with Lightning extension)
• Moodle will export iCalendar data or let you subscribe to a Moodle iCalendar feed.
• Mulberry
• Nevron Calendar - Free online software for appointment scheduling, tasks and events management. Silverlight-based.
• Org-mode - an Emacs mode for organising your life.
• OLAT - LMS supporting import and export of personal and shared calendars via iCalendar
• Open Atrium - Drupal based
• Opengroupware.org
• Open-Xchange
• Orage An Xfce application for Linux-based platforms
• ownCloud - file storage and services including WebDAV, CalDAV and CardDAV.
• Plone open source content management system
• Radicale - A Simple Calendar and Contact Server
• VueMinder Lite
• Request Tracker - a ticket-tracking and call-center application. Exports iCalendar data.
• SeaMonkey internet application suite (with Lightning extension)
• Semantic Mediawiki semantic extension to MediaWiki
• Simple Groupware
• SOGo - an integrated groupware with Apple iCal, Mozilla Thunderbird support and native Outlook compatibility
• SPIP a CMS that allows the export of its site calendar in the iCalendar format.
• Textpattern, with iCal or Calendar plugin.
• Tiki Wiki CMS Groupware Calendar exports to iCal and generates hcal
• Tryton
• Sunbird (a Mozilla stand-alone application, discontinued)
• TYPO3 via its Calendar Base Extension
• WebGUI
• Webical
• Web2project
• WordPress via plugins
• Zarafa Collaboration Platform
• Zimbra Collaboration Suite
• Zotonic via mod_calendar

Proprietary (freeware or paid)

• Eliademy Eliademy.com a cloud based e learning platform
• EventsNow List, promote and sell tickets online.
• 37signals Backpack
• Alfresco - a collaboration portal that allows export of site calendars in the iCalendar format.
• Atlassian Confluence
• Apple Calendar
• Bitrix24 - collaborative software (desktop, web-based and mobile)
• Clinked (White-label Client Portal integrates filesharing, wiki web content & project management tools for easy collaboration in the cloud.)
• Contactizer
• eM Client
• fruux
• Facebook
• FirstClass
• Google Calendar
• Huddle
• iCal Import/Export CalDAV Android app for import, export and calendar synchronistation
• jqxScheduler
• LiquidPlanner
• Lotus Notes
• Lotus Organizer
• Meeting Maker (PeopleCube)
• Microsoft Entourage
• Microsoft Exchange Server
• Microsoft Office Outlook 2000
• Microsoft Office Outlook 2003
• Microsoft Office Outlook 2007
• Microsoft Office Outlook 2010
• Microsoft Office Outlook 2013
• Microsoft Works Calendar
• MIDAS Web Based Room and Resource Scheduling Software which allows export of bookings in iCal format
• MyPhoneExplorer FreeWare phone manager for SonyEricsson mobile phones.
• MyRadioDNS.com Web based RadioDNS/RadioVIS scheduling Software which allows import in iCal format
• Nevron Calendar scheduling software for Windows and Mac which allows iCalendar format import/export
• Novell Groupwise
• Nokia N9 Calendar
• Nokia N900 Calendar
• Projektron BCS
• Planmyleave www.planmyleave.com online leave management tool with Leave calendars integrated with outlook, google and ical
• Rainlendar
• Sun Java System Calendar Server
• Teamwork agenda and meetings synchronizer
• PIM
• TrackerSuite.Net
• Westlaw (TWEN)
• WinCalendar for Windows, Word and Excel Converts ical to Word and Excel format
• Windows Calendar
• Windows Live Calendar
• WorkZone
• Wrike
• WebTrain - Web Conferencing Meeting Reminders
• Yahoo Calendar
• Yandex Calendar