OpenCalendar Sync vs Meeting scheduler nono Booked

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?
FeatureOpenCalendar SyncMeeting scheduler nono Booked
CategoryCalendar & ContactsCalendar & Contacts
LicenseMITGPL-3.0
LanguageTypeScriptPHP
Setup difficultyMediumMedium
Min. RAM256 MB256 MB
Deploymentdocker, sourcebare-metal, docker
GitHub stars★ 852★ 779
First released20142011
ReplacesCalendly, Google CalendarSkedda, 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 Meeting scheduler nono Booked if…

  • Released under the GPL-3.0 license
  • First-class Docker support for quick deployment
  • Written in PHP
  • Tiny footprint — runs in 256 MB RAM
Meeting scheduler nono Booked details

Frequently asked questions

Is OpenCalendar Sync or Meeting scheduler nono Booked better?

Neither is universally better. OpenCalendar Sync has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.

Are OpenCalendar Sync and Meeting scheduler nono Booked free and open-source?

Yes. OpenCalendar Sync is licensed under MIT and Meeting scheduler nono Booked under GPL-3.0. Both can be self-hosted at no software cost.

Can I run OpenCalendar Sync and Meeting scheduler nono Booked with Docker?

OpenCalendar Sync: yes. Meeting scheduler nono Booked: yes.

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