| CalDAVCalendar | Container for a calendar's configuration and data for a calendar from a CalDAV server. |
| Calendar | Container for a calendar's configuration and data, this class handles a specific calendar source's configuration and event data in iCal format. |
| FreeBusyCalendar | Calendar of a person's free/busy calendar (either one calendar or multiple). This contains the details for a person's availability. |
| Generator | FreeBusyCal generator - this is the main class used to generate a free busy calendar. |