SHSelfHostIndex

Kolab Groupware vs WildDuck

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?
KO Kolab Groupware Open-source groupware server with mail and calendaring VS WI WildDuck Scalable IMAP and POP3 mail server with REST API
FeatureKolab GroupwareWildDuck
CategoryGroupwareMail Servers
LicenseAGPL-3.0EUPL-1.2
LanguagePHPJavaScript
Setup difficultyHardHard
Min. RAM2,048 MB1,024 MB
Deploymentbare-metal, dockerdocker, bare-metal
GitHub stars★ 200★ 2,107
First released20022017
ReplacesMicrosoft Exchange, ZimbraMicrosoft Exchange, Gmail

Why pick each one

Choose Kolab Groupware if…

  • Built on proven components
  • Strong standards support
Kolab Groupware details

Choose WildDuck if…

  • API-driven management
  • Horizontally scalable
WildDuck details

Frequently asked questions

Is Kolab Groupware or WildDuck better?

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

Are Kolab Groupware and WildDuck free and open-source?

Yes. Kolab Groupware is licensed under AGPL-3.0 and WildDuck under EUPL-1.2. Both can be self-hosted at no software cost.

Can I run Kolab Groupware and WildDuck with Docker?

Kolab Groupware: yes. WildDuck: yes.

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