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Thunderbird Appointment

Self-hostable scheduling tool for booking meetings

Calendar & Contacts ★ 554 stars Medium setup MPL-2.0

Thunderbird Appointment is an open-source scheduling application that lets users share availability and let others book time slots. It integrates with CalDAV calendars and is built by the Thunderbird team.

Official siteSource code

Key features

  • Availability sharing
  • Bookable time slots
  • CalDAV integration
  • Built by Thunderbird

Strengths

  • Released under the MPL-2.0 license
  • First-class Docker support for quick deployment
  • Written in Python
  • Lightweight — runs in 512 MB RAM

Is Thunderbird Appointment secure?

OSV.dev has no published security advisories for Thunderbird Appointment'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.

Thunderbird Appointment replaces

Self-hosted Calendly alternativesSelf-hosted Doodle alternatives

Health badge

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SelfHostIndex: 80 · excellent

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Compare Thunderbird Appointment

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