SHSelfHostIndex

Kopano Groupware Core vs Calcom Calendar

A side-by-side comparison of two self-hosted groupware options — licensing, setup difficulty, resource needs, and what each one replaces.

Not the right match-up?
KO Kopano Groupware Core Open-source collaboration platform with Outlook support VS CA Calcom Calendar Open-source scheduling and appointment booking platform
FeatureKopano Groupware CoreCalcom Calendar
CategoryGroupwareGroupware
LicenseAGPL-3.0AGPL-3.0
LanguageC++TypeScript
Setup difficultyHardMedium
Min. RAM2,048 MB1,024 MB
Deploymentdocker, bare-metaldocker, bare-metal, source
GitHub stars★ 60★ 47,334
First released20162021
ReplacesMicrosoft ExchangeCalendly, Doodle

Why pick each one

Choose Kopano Groupware Core if…

  • Released under the AGPL-3.0 license
  • First-class Docker support for quick deployment
  • Written in C++
Kopano Groupware Core details

Choose Calcom Calendar if…

  • Polished modern UX
  • Rich integrations
Calcom Calendar details

Frequently asked questions

Is Kopano Groupware Core or Calcom Calendar better?

Calcom Calendar is the stronger all-round pick: it has both the larger community and the simpler medium setup. Consider Kopano Groupware Core if its specific feature set fits your needs better.

Are Kopano Groupware Core and Calcom Calendar free and open-source?

Yes. Kopano Groupware Core is licensed under AGPL-3.0 and Calcom Calendar under AGPL-3.0. Both can be self-hosted at no software cost.

Can I run Kopano Groupware Core and Calcom Calendar with Docker?

Kopano Groupware Core: yes. Calcom Calendar: yes.

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