Khal is a standards based CLI and terminal calendar program, able to synchronize with CalDAV servers through vdirsyncer.

Features: - khal can read and write events/icalendars to vdir, so vdirsyncer can be used to synchronize calendars with a variety of other programs, for example CalDAV servers. - fast and easy way to add new events - ikhal (interactive khal) lets you browse and edit calendars and events