SHSelfHostIndex

OpenCalendar Sync vs GNOME Calendar

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?
OP OpenCalendar Sync Self-hosted shared calendar with public event pages VS GN GNOME Calendar Simple desktop calendar with CalDAV support
FeatureOpenCalendar SyncGNOME Calendar
CategoryCalendar & ContactsCalendar & Contacts
LicenseMITGPL-3.0
LanguageTypeScriptC
Setup difficultyMediumEasy
Min. RAM256 MB256 MB
Deploymentdocker, sourcebinary, source
GitHub stars★ 852★ 300
First released20142015
ReplacesCalendly, Google CalendarGoogle Calendar

Why pick each one

Choose OpenCalendar Sync if…

  • Released under the MIT license
  • First-class Docker support for quick deployment
  • Written in TypeScript
  • Tiny footprint — runs in 256 MB RAM
OpenCalendar Sync details

Choose GNOME Calendar if…

  • Released under the GPL-3.0 license
  • Easy to set up — beginner-friendly
  • Written in C
  • Tiny footprint — runs in 256 MB RAM
GNOME Calendar details

Frequently asked questions

Is OpenCalendar Sync or GNOME Calendar better?

Neither is universally better. OpenCalendar Sync has the larger community, while GNOME Calendar is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.

Are OpenCalendar Sync and GNOME Calendar free and open-source?

Yes. OpenCalendar Sync is licensed under MIT and GNOME Calendar under GPL-3.0. Both can be self-hosted at no software cost.

Can I run OpenCalendar Sync and GNOME Calendar with Docker?

OpenCalendar Sync: yes. GNOME Calendar: check the project docs for container support.

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