| Attendee | Represents an event attendee, the ATTENDEE property defined in RFC 5545 section 3.8.4.1. |
| CronExpression | Represents a cron expression. |
| Event | Represents a calendar event with scheduling information. |
| InternetCalendar | Represents an iCalendar calendar containing events. |
| InternetCalendarProperty | An iCalendar property kept verbatim: its name, its parameters and its value exactly as they are written in a content line (RFC 5545 section 3.1). |
| InternetCalendarUserAddress | Represents a calendar user address as defined in RFC 5545 section 3.3.3. |
| Organizer | Represents an event organizer, the ORGANIZER property defined in RFC 5545 section 3.8.4.3. |
| RecurrenceRule | Represents a recurrence rule as defined in RFC 5545 for recurring events. |
| RecurrenceRuleExtensions | |
| RecurrenceRuleHumanizerExtensions | Provides extension methods for converting recurrence rules to human-readable text. |