ZITADEL vs Clerk
ZITADEL is a European alternative to Clerk: same security & identity use case, headquartered in Switzerland and operating under GDPR by default, 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
- EU / EEA
- GDPR by default
- Yes
- US CLOUD Act exposure
- No
- Open source
- Yes
- Free tier
- No
A curated collection of the best European alternatives to Clerk.
- Jurisdiction
- US
- GDPR by default
- Requires DPA + TIA
- US CLOUD Act exposure
- Yes
ZITADEL vs Clerk at a glance
| ZITADEL | Clerk | |
|---|---|---|
| Headquarters | Switzerland | US |
| Data jurisdiction | EU / EEA | US law applies |
| GDPR by default | Yes | Requires DPA + transfer assessment |
| US CLOUD Act exposure | No | Yes |
| Open source | Yes | — |
| Free tier | No | — |
| Best for | Teams that need security & identity with EU data residency | Teams already invested in the Clerk ecosystem |
Choose ZITADEL if…
- You want your data to stay under EU law without extra legal paperwork
- GDPR compliance or public-sector 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 US, 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 natively under GDPR, and data stays inside the EU/EEA by default. 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 non-EU jurisdiction that can change the rules without warning.