OpenCalendar Sync vs Easy!Appointments

A side-by-side comparison of two self-hosted apps from related categories — licensing, setup difficulty, resource needs, and what each one replaces.

Not the right match-up?
FeatureOpenCalendar SyncEasy!Appointments
CategoryCalendar & ContactsGroupware
LicenseMITGPL-3.0
LanguageTypeScriptPHP
Setup difficultyMediumEasy
Min. RAM256 MB256 MB
Deploymentdocker, sourcedocker, bare-metal, source
GitHub stars★ 852★ 4,306
First released20142013
ReplacesCalendly, Google CalendarCalendly, Acuity Scheduling

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 Easy!Appointments if…

  • Lightweight and easy
  • Good for small businesses
Easy!Appointments details

Frequently asked questions

Is OpenCalendar Sync or Easy!Appointments better?

Easy!Appointments is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider OpenCalendar Sync if its specific feature set fits your needs better.

Are OpenCalendar Sync and Easy!Appointments free and open-source?

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

Can I run OpenCalendar Sync and Easy!Appointments with Docker?

OpenCalendar Sync: yes. Easy!Appointments: yes.

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