SHSelfHostIndex

Thunderbird Appointment vs Open Event Server

A side-by-side comparison of two self-hosted calendar & contacts options — licensing, setup difficulty, resource needs, and what each one replaces.

Not the right match-up?
TH Thunderbird Appointment Self-hostable scheduling tool for booking meetings VS OP Open Event Server Self-hosted event management and ticketing backend
FeatureThunderbird AppointmentOpen Event Server
CategoryCalendar & ContactsCalendar & Contacts
LicenseMPL-2.0GPL-3.0
LanguagePythonPython
Setup difficultyMediumHard
Min. RAM512 MB1,024 MB
Deploymentdocker, sourcedocker, source
GitHub stars★ 547★ 3,006
First released20232016
ReplacesCalendly, DoodleEventbrite, Sched

Why pick each one

Choose Thunderbird Appointment if…

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

Choose Open Event Server if…

  • Released under the GPL-3.0 license
  • First-class Docker support for quick deployment
  • Active community (3k GitHub stars)
  • Written in Python
Open Event Server details

Frequently asked questions

Is Thunderbird Appointment or Open Event Server better?

Neither is universally better. Open Event Server has the larger community, while Thunderbird Appointment is simpler to set up (medium difficulty). Choose based on the comparison table above and your own setup.

Are Thunderbird Appointment and Open Event Server free and open-source?

Yes. Thunderbird Appointment is licensed under MPL-2.0 and Open Event Server under GPL-3.0. Both can be self-hosted at no software cost.

Can I run Thunderbird Appointment and Open Event Server with Docker?

Thunderbird Appointment: yes. Open Event Server: yes.

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