Auth & Identity: European providers compared

Identity and access management (IAM): login, SSO, MFA and user management for your own applications – ideally open source, self-hostable and with EU data residency.

Recommendations

Univention

Germany

Confidence: high

German open-source IAM platform (Univention Corporate Server) for identities, SSO and app integration – self-hostable, strong on sovereignty.

EUOpen SourceSelf-Hosting

Zitadel

Switzerland

Confidence: high

Swiss open-source identity and auth platform (OIDC, SAML, MFA) – self-hostable or as a cloud, an alternative to Auth0/Okta.

EFTAOpen SourceSelf-Hosting

Comparison table

Providers	Score	Headquarters	Open Source	Self-hosting	EU hosting	Pricing
Univention	92	Germany				Open source (UCS Core Edition, free) / enterprise subscription
Zitadel	86	Switzerland				Open source (AGPLv3, self-hosted, free) / cloud (pay-as-you-go)

Selection criteria

Clarify the standards you need (OIDC, SAML, SCIM), MFA or passkeys, multi-tenancy and whether self-hosting matters. Open-source, self-hostable solutions give full control over identities.

Data protection & compliance

IAM systems manage especially sensitive identity and access data. Important factors are EU data residency or self-hosting, a DPA and strong authentication (MFA, FIDO2).

The Sovereignty Score is an editorial orientation aid, not legal advice.

Typical use cases

Login and SSO for your own apps
Multi-tenant B2B SaaS
MFA and passkeys/FIDO2
Self-hosting for full identity control

Pricing guidance

Self-hostable open-source options are free; cloud usually bills by active users (DAU/MAU), typically with a free entry tier.

Providers in this category

2 results

Univention

Germany

Confidence: high

German open-source IAM platform (Univention Corporate Server) for identities, SSO and app integration – self-hostable, strong on sovereignty.

EUOpen SourceSelf-Hosting

Zitadel

Switzerland

Confidence: high

Swiss open-source identity and auth platform (OIDC, SAML, MFA) – self-hostable or as a cloud, an alternative to Auth0/Okta.

EFTAOpen SourceSelf-Hosting

Related alternative pages

Auth0 Alternative

Frequently asked questions

Is there a European Auth0 alternative?

Yes – open-source IAM platforms like Zitadel offer OIDC, SAML and MFA, can be self-hosted and are operated from Europe.

The Sovereignty Score is an editorial orientation aid, not legal advice. How we rate.