Head-to-head · Authentication & SSO
Auth0 / Okta vs ZITADEL
Which one to pick in 2026 — comparing 🇺🇸 Auth0 / Okta with the European alternative 🇪🇺 ZITADEL on the things that actually decide who can read your data.
🇺🇸 Auth0 / Oktavs🇪🇺 ZITADEL
Verdict
Who has stronger privacy guarantees by law?
ZITADEL — GDPR-native and outside the US CLOUD Act / FISA 702 reach.
Which one encrypts your data end-to-end by default?
Neither ships full E2E by default — check the table for nuance.
Which one tracks you for ads?
Neither monetises through ad tracking.
Which one is open source?
ZITADEL is open source. Auth0 / Okta is proprietary.
Side-by-side
Auth0 / Okta vs ZITADEL — full comparison
Criteria
🇪🇺 ZITADEL
🇺🇸 Auth0 / Okta
Headquarters
Zürich, Switzerland
San Francisco, CA, USA
Jurisdiction
Switzerland (FADP) + EU cloud (GDPR)
USA (CLOUD Act, FISA 702)
Data location
Switzerland or EU (your choice)
Global, US-controlled (AWS)
GDPR-native
Yes
No
CLOUD Act / FISA exposed
No
Yes
Ad tracking
No
No
End-to-end encryption
No
No
Open source
Yes
No
Ownership
CAOS Ltd (private, Swiss)
Okta Inc. (NASDAQ:OKTA)
Founded
2019
2013
Make the switch
Try ZITADEL instead of Auth0 / Okta
Swiss open-source identity platform — cloud-native Auth0 alternative with multi-tenancy.
Other European alternatives to Auth0 / Okta