khal

What it does

Calendar data

Calendar collections are configured as directories containing vdir calendar data, and a collection can be marked read-only.checked 12 Oct 2026

Calendar format

khal aims to follow RFC 5545 iCalendar, with documented exceptions and unsupported cases.checked 5 Oct 2026

Calendar storage

It reads and writes events and iCalendars in vdir directories, which vdirsyncer can synchronize with other programs and CalDAV servers.checked 12 Oct 2026

Calendar sync

It can synchronize with CalDAV servers through vdirsyncer.checked 5 Oct 2026

Commands

Its commands include list, calendar, interactive, new, printcalendars, printformats, and search.checked 12 Oct 2026

Configuration

A small interactive configuration tool is available through the `khal configure` command.checked 12 Oct 2026

Event entry

The project describes khal as a fast and easy way to add events.checked 12 Oct 2026

Event management

The project describes a fast way to add events, and ikhal lets users browse and edit calendars and events.checked 5 Oct 2026

Installation

The project says khal is packaged for most operating systems and lists package manager installation examples.checked 5 Oct 2026

Interactive interface

ikhal is an interactive mode for browsing and editing calendars and events.checked 12 Oct 2026

License

khal is released under the Expat/MIT License.checked 12 Oct 2026

Limit: operating systems

The project says khal should run on major operating systems except Microsoft Windows.checked 5 Oct 2026

Limit: recurrence

The official feature list says support for creating and editing recurrence rules is rudimentary.checked 5 Oct 2026

Limit: timezones

khal does not support editing event timezones.checked 5 Oct 2026

Local calendar storage

khal reads and writes events and iCalendars to vdir directories.checked 5 Oct 2026

Maintenance

The official news page says in its 2019 release notice that the author had less time for khal and was seeking developers and maintainers.checked 5 Oct 2026

Operating systems

The project says khal should run on all major operating systems except Microsoft Windows.checked 12 Oct 2026

Purpose

khal is a standards based command-line calendar program that can synchronize with CalDAV servers through vdirsyncer.checked 12 Oct 2026

Recurring events

Support for creating and editing recurrence rules is rudimentary.checked 12 Oct 2026

Security and compliance

The project pages opened provide no security certification or compliance claim.checked 5 Oct 2026

Security and privacy

The project documentation describes local calendar directories and a local caching database; it does not state security certifications or compliance claims on these pages.checked 12 Oct 2026

Support

The project asks users with codebase questions to contact the contributors and welcomes early GitHub pull requests for patches.checked 12 Oct 2026

Time zones

Events' time zones cannot be edited in khal.checked 12 Oct 2026