compare
Ory Kratos vs ZITADEL
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | Ory Kratos | ZITADEL |
|---|---|---|
| Language | Go | Go |
| Licence | Apache-2.0 | AGPL-3.0 |
| Stars | 14k | 15k |
| Latest | v26.2.0 | v4.19.4 |
| Last push | 2026-07-29 | 2026-10-06 |
| Release cadence | about 123 days between releases | about 2 days between releases |
| Active contributors | 8 commit authors on the default branch in the last 90 days | 20 commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
Both replace Auth0. Alternatives to Auth0 →
PartialOry KratosRegistration, login, MFA and account recovery through an API; you bring the login pages.
Full replacementZITADELMulti-tenant login, OpenID Connect, SAML and passkeys, built for B2B apps.
Ory Kratos
- v26.2.02026-03-20v26.2.0
- v25.4.02025-11-07This release introduces passwordless authentication via SMS, expanded passkey and WebAuthn support, new SAML and OIDC f…
- v1.3.12024-10-28This release adds the ability to verify Android passkeys.
- v1.3.02024-09-26We are thrilled to announce the release of Ory Kratos v1.3.0! This release includes significant updates, enhancements,…
- v1.2.02024-06-05Ory Kratos v1.2 is the most complete, scalable, and secure open-source identity server available. We are thrilled to an…
ZITADEL
- v4.19.42026-10-01actions: set instance ID in async execution worker context (#12730) (03a2469), closes #11985
- v4.19.32026-09-29query: index users14 by instance and org (#12830) (d378dea), closes #12826
- v4.19.22026-09-28This release fixes three security vulnerabilities. We recommend all 4.x deployments upgrade.
- v4.19.12026-09-23setup step 79 batch unique constraint owner backfill (#12803) (42cdd5d)
- v4.19.02026-09-23eventstore: omit owners on empty unique constraint inserts (#12785) (6308539), closes #12740 #12780 #12740
Ory Kratos
unsigned The latest release, v26.2.0, carries no signature GitHub could verify.
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ZITADEL
✓ signed The latest release, v4.19.4, carries a signature GitHub verified.
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