icalendar.rb is a Ruby library for parsing and generating iCalendar files.
ICalendar Validator checks the encoding and structure of your ICalendar resources against the ICalendar specifications.
ICalendar Aggregator aggregates events from multiple ICalendar feeds. It supports handling duplicates, multiple views (list, day, week), and manual input or correction of events.
A control protocol for various astronomical instruments (telescopes, CCDs, etc).
Data center infrastructure management.