SHSelfHostIndex

Warrant vs ZITADEL

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

Not the right match-up?
WA Warrant Open-source authorization service for fine-grained access VS ZI ZITADEL Cloud-native identity infrastructure with multi-tenancy built in
FeatureWarrantZITADEL
CategoryIdentity & SSOIdentity & SSO
LicenseApache-2.0Apache-2.0
LanguageGoGo
Setup difficultyMediumMedium
Min. RAM256 MB512 MB
Deploymentdocker, binarydocker, kubernetes, binary
GitHub stars★ 1,336★ 14,671
First released20222020
ReplacesAuth0 FGAAuth0, Okta, Firebase Auth

Why pick each one

Choose Warrant if…

  • Released under the Apache-2.0 license
  • First-class Docker support for quick deployment
  • Active community (1.3k GitHub stars)
  • Written in Go
Warrant details

Choose ZITADEL if…

  • Strong multi-tenant model
  • Modern Go codebase
ZITADEL details

Frequently asked questions

Is Warrant or ZITADEL better?

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

Are Warrant and ZITADEL free and open-source?

Yes. Warrant is licensed under Apache-2.0 and ZITADEL under Apache-2.0. Both can be self-hosted at no software cost.

Can I run Warrant and ZITADEL with Docker?

Warrant: yes. ZITADEL: yes.

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