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khal

Command-line calendar built on CalDAV

Calendar & Contacts ★ 3.1k stars Medium setup MIT

khal is a standards-based command-line calendar program that reads and writes iCalendar files and works with vdirsyncer to synchronize against self-hosted CalDAV servers. It offers an interactive console interface.

Official siteSource code

Key features

  • Command-line CalDAV calendar
  • Works with vdirsyncer
  • Interactive console interface

Strengths

  • Released under the MIT license
  • Active community (3.1k GitHub stars)
  • Written in Python
  • Tiny footprint — runs in 64 MB RAM

Is khal secure?

OSV.dev has no published security advisories for khal's repository. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

Source: OSV.dev, checked 2026-10-14. How this is measured.

khal replaces

Self-hosted Google Calendar alternatives

Health badge

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SelfHostIndex: 69 · good

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   :target: https://selfhostindex.com/app/khal/

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