ZITADEL vs Clerk
ZITADEL is a European alternative to Clerk: same security & identity use case, headquartered in Switzerland and governed by Swiss FADP + GDPR for EU users, while Clerk is based in the United States.
By the EU Alternatives team Last updated
Manage user identities securely with customizable authentication, SSO, MFA, and RBAC. Offers easy APIs, programmable workflows, and multi-tenancy for developers.
- Jurisdiction
- Switzerland / EFTA
- Primary privacy law
- Swiss FADP + GDPR for EU users
- US CLOUD Act exposure
- No
- Open source
- Yes
- Free tier
- No
Drop-in authentication with prebuilt sign-in components, session handling and organisation support that saves a small team weeks of work, especially on Next.js. The Hobby plan is genuinely free up to 50,000 monthly retained users, and Pro is 25 dollars a month plus 0.02 per extra user. Clerk, Inc. is a Delaware company operating from San Francisco, so your user directory lives under US law.
- Jurisdiction
- United States
- GDPR by default
- Requires DPA + TIA
- US CLOUD Act exposure
- Yes
ZITADEL vs Clerk at a glance
| ZITADEL | Clerk | |
|---|---|---|
| Headquarters | Switzerland | United States |
| Data jurisdiction | Switzerland / EFTA | United States |
| Primary privacy law | Swiss FADP + GDPR for EU users | Requires DPA + transfer assessment |
| US CLOUD Act exposure | No | Yes |
| Best for | Teams that need security & identity built for European data-protection requirements | Teams already invested in the Clerk ecosystem |
Choose ZITADEL if…
- You want a provider governed by a European privacy regime
- GDPR or public-sector data-protection requirements apply to you
- Open-source code and self-hosting matter to you
- You'd rather back the European tech ecosystem
Stick with Clerk if…
- You depend on integrations only available in the Clerk ecosystem
- Your organisation has no EU data-residency constraints
- Migration costs outweigh the jurisdiction benefits for now
About ZITADEL
ZITADEL is an open-source identity infrastructure platform that combines the flexibility of self-hosting with the convenience of a managed cloud, bridging enterprise authentication and developer-friendly APIs in a single product.
The platform handles the full identity lifecycle: login pages, social logins, SSO, MFA, passkeys, RBAC, machine identities, and multi-tenancy, all configurable through gRPC and REST APIs. ZITADEL Actions let teams run custom workflows after any auth event without writing a custom server.
Key features:
- Authentication with hosted login UI, social logins, passkeys, MFA, and SSO
- Authorization via role-based access control with fine-grained permission management
- Multi-tenancy to add new organisations, delegate admin rights, and isolate data per tenant
- Machine identities covering service accounts and API key management for non-human actors
- Extensible through ZITADEL Actions that execute serverside logic after any auth event
- APIs built on modern gRPC and REST, with SDKs for Go, Angular, React, Next.js, Flutter, and Python
- Compliance spanning OpenID certification, ISO 27001, GDPR, and SOC 2 Type II
Open source with 4,000+ GitHub stars and 50+ contributors. Deploy to your own infrastructure or use ZITADEL Cloud with EU data residency.
Why choose ZITADEL over Clerk?
The decisive argument is data jurisdiction. Clerk is headquartered in the United States, which means personal data processed through it can be subject to non-EU legal regimes: the US CLOUD Act, FISA 702, or similar laws depending on the provider. After the 2020 Schrems II ruling, EU organisations must carry out a transfer impact assessment for every such data flow.
ZITADEL removes that overhead. As a Switzerland-based provider, it operates under Swiss FADP + GDPR for EU users, and data stays in Switzerland, which the European Commission recognises as offering an adequate level of protection. For regulated sectors such as health, public administration, and finance, that's not a nice-to-have but a requirement. For everyone else, it's concentration-risk insurance: you avoid depending on a single jurisdiction that can change the rules without warning.