Kopano Groupware Core vs Kontact

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

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FeatureKopano Groupware CoreKontact
CategoryGroupwareGroupware
LicenseAGPL-3.0GPL-2.0
LanguageC++C++
Setup difficultyHardMedium
Min. RAM2,048 MB512 MB
Deploymentdocker, bare-metalbinary, source
GitHub stars★ 60★ 200
First released20162004
ReplacesMicrosoft ExchangeMicrosoft Outlook

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 Kontact if…

  • Released under the GPL-2.0 license
  • Written in C++
  • Lightweight — runs in 512 MB RAM
Kontact details

Frequently asked questions

Is Kopano Groupware Core or Kontact better?

Kontact 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 Kontact free and open-source?

Yes. Kopano Groupware Core is licensed under AGPL-3.0 and Kontact under GPL-2.0. Both can be self-hosted at no software cost.

Can I run Kopano Groupware Core and Kontact with Docker?

Kopano Groupware Core: yes. Kontact: check the project docs for container support.

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