Calendar Server is a scalable, web-based solution for centralized calendaring and scheduling for enterprises and service providers. Calendar Server supports user calendars for both events and tasks as well as calendars for resources, such as conference rooms and equipment. For a list of new features, see the following section, What's New in This Release of Calendar Server.
Calendar Server offers a graphical user interface, Communications Express. It also offers customers the flexibility to use the Web Calendar Access Protocol (WCAP) to access calendar data directly in either text/calendar or text/xml format.