3 Services from ical.openverbs.com

Expands an RFC 5545 RRULE recurrence rule string into a list of concrete occurrence datetimes, with an optional human-readable description of the recurrence pattern.

Parses raw iCalendar (.ics) text into structured calendar event objects including summary, start/end times, location, RRULE recurrence rules, and attendees.

Generates a valid .ics calendar file from event fields such as summary, start/end time, location, and description.