Keycloak
🇪🇺by Keycloak
Open-source identity and access management solution supporting SSO, OAuth 2.0, and SAML. Developed by Red Hat.
Open SourceSelf-HostableEU-hosted
US-based service. Data subject to US jurisdiction
Best European Auth0 Alternatives (2026)
🇺🇸US Companyby Okta
Auth0 by Okta is a flexible identity management platform that provides secure authentication and authorization services for applications. It simplifies user login, enhances security, and improves user experience. Ideal for developers and businesses.
Best Auth0 Alternatives
5 privacy-focused, GDPR-compliant alternatives
Curated by Sidney van den Boogaard, Founder of BuiltInEu · Updated
Quick answer: 5 European alternatives to Auth0 are listed, from 3 countries. 4 are open source and 2 have a free plan. Top picks: Keycloak, Zitadel and Authentik.
| # | Product | Country | Pricing | Free plan | Open source | Self-host |
|---|---|---|---|---|---|---|
| 1 | Keycloak | 🇪🇺European Union | No | Yes | Yes | |
| 2 | Zitadel | 🇨🇭Switzerland | Yes | Yes | Yes | |
| 3 | Authentik | 🇩🇪Germany | Yes | Yes | Yes | |
| 4 | Rauthy | 🇩🇪Germany | No | Yes | Yes | |
| 5 | Bare.ID | 🇩🇪Germany | No | Not verified | Yes |
A dash means we have not verified that attribute. Migration difficulty is shown only where the editor tested the switch.
Zitadel
🇨🇭by Zitadel
Zitadel is an open-source identity and access management platform developed by the European company Zitadel. It provides developers with tools for user authentication, authorization, and secure data management. The platform supports various protocols and integrates easily with existing applications, ensuring a streamlined user experience.
EU-BasedGDPR CompliantOpen SourceSelf-HostableSwiss hosted
by Authentik
Authentik is an open-source identity provider designed for user authentication and authorization. Developed by a European company, it supports various protocols including OAuth2 and SAML, enabling secure access management for applications. Authentik offers a customizable user interface and integrates easily with existing systems.
EU-BasedOpen SourceSelf-HostableSource AvailableEU-hostedGDPR Compliant
Rauthy
🇩🇪by Rauthy
Rauthy is a lightweight Identity Provider supporting OpenID Connect, OAuth 2, and PAM. It is designed for easy setup and operation with secure defaults and flexible configuration options. The application emphasizes strong security, including Passkeys and passwordless login options, and is written in Rust for efficiency and speed.
EU-BasedOpen SourceEU-hosted
Bare.ID
🇩🇪by Bare.ID
Bare.ID offers a German self-hostable authentication solution designed for developers seeking control over their identity management. It provides a customizable open-source platform, allowing seamless integration with existing systems while ensuring data privacy and compliance with local regulations.
EU-Based
Why switch from Auth0?
US CLOUD Act
US authorities can access your data stored by US companies, even if stored in Europe.
Privacy Concerns
US companies may collect and use your data in ways not compliant with EU standards.
EU Alternatives
European providers are listed by headquarters. Verify privacy, hosting, security, and legal requirements for your use case.
Frequently Asked Questions
Are there European alternatives to Auth0?
Yes, there are European alternatives to Auth0. Headquarters, hosting, encryption, and compliance are separate facts, so compare features and verify each provider's current privacy, security, and hosting documentation.
Why should I switch from Auth0 to an EU alternative?
A European provider can support procurement or data-sovereignty goals, but it does not automatically guarantee European hosting, encryption, GDPR compliance, or immunity from foreign law. Verify the provider's policies and seek legal advice where required.
Is Auth0 GDPR compliant?
As a US-based company, Auth0 may transfer and process your data in the United States. While they may have GDPR compliance measures, your data could still be subject to US laws including the CLOUD Act.
How do I migrate from Auth0 to an EU alternative?
We provide detailed migration guides to help you switch from Auth0 to European alternatives. These guides include step-by-step instructions, data export procedures, and tips for a smooth transition.
Other Authentication you might want to replace
Ready to switch to a privacy-focused alternative?
Protect your data by moving to an EU-based service. Our migration guides make switching easy.
