List of applications with iCalendar support

The following is a list of applications which support iCalendar:

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

Open source

• Balsa a lightweight email client for GNOME
• Calcurse Text based calendar and to do organizer.
• 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
• Drupal with its event module
• etm (text based event and task manager) export to iCal
• Evolution the Gnome email/calendar client
• Hippo CMS
• Horde
• Joomla there are several plugins available
• Kontact (namely KOrganizer and KMail)
• Lightning (Mozilla extension for Thunderbird mail/news client and SeaMonkey internet application suite)
• Mozilla Thunderbird mail/news client (with Lightning extension)
• Moodle will export iCalendar data or let you subscribe to a Moodle iCalendar feed.
• Mulberry
• Org-mode - an Emacs mode for organising your life.
• OLAT - LMS supporting import and export of personal and shared calendars via iCalendar
• Opengroupware.org
• Open-Xchange
• Osmo (PIM)[1]
• ownCloud - cloud storage and services including WebDAV, CalDAV and CardDAV.
• phlyMail (groupware)
• PHP iCalendar - viewer/parser to display iCals in a Web browser
• Plone open source content management system
• 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 - a 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.
• 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
• vTigerCRM (CRM)[2]
• WebGUI
• Webical
• Web2project
• Wordpress via plugins
• YaMA - Yet another Meeting Assistant
• Zarafa Collaboration Platform
• Zimbra Collaboration Suite
• Zotonic via mod_calendar

Proprietary

• 37signals Backpack
• Alfresco - a collaboration portal that allows export of site calendars in the iCalendar format.
• Atlassian Confluence
• Apple iCal
• Bookeo - a booking system with calendar integrated with iCalendar.
• Buni Meldware Communication Suite
• Calendarscope A calendar program that exports icalendar (.ics) files
• Contactizer
• DayMate A day planner program that imports and exports iCalendar 2.0 files.
• EventForward - an iOS application that allows export of calendar events in the iCalendar format.
• Facebook
• FirstClass
• Google Calendar
• Huddle
• ICS Importer [3] Android Icalendar file import to the Android Calendar
• Jalios JCMS
• KeepandShare - online suite of web applications, including a web calendar that allows import and export of calendar events in the iCalendar format.
• KeepMeBooked - web-based guesthouse/B&B software
• LifeSize Bridge
• LiquidPlanner
• Lotus Notes
• Meeting Maker (PeopleCube)
• melssCRM (CRM)[4][5]
• Microsoft Entourage
• Microsoft Exchange Server
• Microsoft Office Outlook 2000
• Microsoft Office Outlook 2007
• Microsoft Office Outlook 2010
• Microsoft Works Calendar
• myBookingWizard [6] Web 2.0 online booking application
• MyPhoneExplorer [7] FreeWare phone manager for SonyEricsson mobile phones.
• Novell Groupwise
• Nokia N9 Calendar
• Nokia N900 Calendar
• Nuvvo
• Projektron BCS
• Rainlendar
• Sun Java Calendar Server
• Teamwork agenda and meetings synchronizer
• Westlaw (TWEN)
• WinCalendar [8] Converts ICAL to Word and Excel formats (Windows).
• Windows Calendar
• Windows Live Calendar
• Wrike
• WebTrain - Web Conferencing Meeting Reminders
• Yahoo Calendar
• Yandex Calendar
• Zimbra Collaboration Suite