Included with Mac OS X
Desktop client for Mac OS X that supports CalDAV Access and Scheduling.
Included with iPhone OS 3
Client for iPhone/iPod Touch that supports CalDAV Access.
Included with Atmail Product PHP/Zend, jQuery
* A complete Ajax Web Calendar which supports creation of events, tasks, and allow users to schedule work and appointments
* Daily and weekly calendar view included
* Intuitive Web interface for creating, moving and resizing scheduled events
* View shared Calendars, users availability and all the features you'd expect in a groupware solution
* Support for IE, Firefox, Safari, Chrome and modern browsers
* Delegation support for shared Calendars
Open Source/Cross-platform
Desktop client that includes CalDAV Access support.
Free/Windows
Desktop client for Windows (.NET) that supports CalDAV Access.
Commercial/iPhone
eTask is a task (to-do) manager for the iPhone that uses CalDAV to store and access the task remotely.
Open source/Linux
Evolution provides integrated mail, addressbook and calendaring functionality to users of the GNOME desktop.
Open Source/Web/PHP (Releasing in 2009)
Kronolith is the Horde calendar application and is adding support for CalDAV.
Open Source/Cross-platform
Desktop client (Sunbird) and Thunderbird plugin (Lightning) that supports CalDAV Access and Scheduling.
Open Source/Cross-platform
Desktop client that supports CalDAV Access and Scheduling.
Open Source/Windows
Outlook plugin that supports CalDAV Access and Scheduling.
Commercial/Mac OS X & Windows
Postbox is a Mozilla-based email application that now supports the Mozilla Lightning extension to enable access to calendars directly within the application, including CalDAV servers.
Commercial/iPhone
RemoteCalendar is able to directly access CalDAV calendar data on the iPhone.
Symbian OS
Sun Microsystems, Inc. has committed to contribute CalDAV support for Symbian OS (mobile devices).
Commercial/Mac OS X
Application to manage both personal and shared calendars.
Open Source/Java
TaskCal Internet standards based human task management and process interaction. TaskCal is an iCalendar wrapper to the jBPM process manager, providing standards based calendar agent access to an actors tasks via email (iMIP), HTTP (.ics) and CalDAV.
Commercial/Windows
Outlook plugin that supports CalDAV Access and Scheduling.