OpenCalendar Sync vs AgenDAV

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 SyncAgenDAV
CategoryCalendar & ContactsCalendar & Contacts
LicenseMITGPL-3.0
LanguageTypeScriptPHP
Setup difficultyMediumMedium
Min. RAM256 MB128 MB
Deploymentdocker, sourcebare-metal, docker
GitHub stars★ 852★ 811
First released20142011
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 AgenDAV if…

  • Released under the GPL-3.0 license
  • First-class Docker support for quick deployment
  • Written in PHP
  • Tiny footprint — runs in 128 MB RAM
AgenDAV details

Frequently asked questions

Is OpenCalendar Sync or AgenDAV 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 AgenDAV free and open-source?

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

Can I run OpenCalendar Sync and AgenDAV with Docker?

OpenCalendar Sync: yes. AgenDAV: yes.

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