DAViCal vs mailcow

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?
FeatureDAViCalmailcow
CategoryGroupwareMail Servers
LicenseGPL-2.0GPL-3.0
LanguagePHPJavaScript
Setup difficultyMediumMedium
Min. RAM256 MB6,144 MB
Deploymentdocker, bare-metal, sourcedocker
GitHub stars★ 200★ 13,245
First released20072016
ReplacesGoogle Calendar, Microsoft ExchangeMicrosoft Exchange, Google Workspace

Why pick each one

Choose DAViCal if…

  • Released under the GPL-2.0 license
  • First-class Docker support for quick deployment
  • Written in PHP
  • Tiny footprint — runs in 256 MB RAM
DAViCal details

Choose mailcow if…

  • All components preconfigured
  • Active community
mailcow details

Frequently asked questions

Is DAViCal or mailcow better?

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

Are DAViCal and mailcow free and open-source?

Yes. DAViCal is licensed under GPL-2.0 and mailcow under GPL-3.0. Both can be self-hosted at no software cost.

Can I run DAViCal and mailcow with Docker?

DAViCal: yes. mailcow: yes.

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