Non-EU vendorIdentityHeadquarters: US

Clerk: sovereignty score and 8 European alternatives

Clerk is a user authentication and management platform for web applications. Developers use it for sign-up and sign-in, multi-factor authentication, social logins, magic links and session management. It also supports organisations with roles and permissions for B2B software, enterprise SSO with directory sync, and authorisation for AI agents acting on behalf of users. Clerk is delivered as a cloud service and offers SDKs for frameworks such as Next.js, React and Expo.

Clerk, Inc. is headquartered in San Francisco, California (United States). Its privacy policy says information may be transferred, processed and stored anywhere in the world, including the United States, and names no EU region. For customer data Clerk acts as a processor, and a supplemental GDPR notice exists for residents of the EEA, Switzerland and the United Kingdom. According to the policy a data processing agreement applies 'when applicable'. For a European organisation, using Clerk means that user login data sits with a US vendor that is subject to US law, including the CLOUD Act.

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Sovereignty score

17 / 1000 = high exposure
100 = sovereign

Jurisdiction SOV-210
Headquartered in the US: CLOUD Act and FISA 702
Data residency SOV-30
No hosting in Europe (US)
Cryptographic key sovereignty SOV-320
Key management with a non-European vendor
Freedom from lock-in SOV-640
Closed source: switching requires data migration
Source & runtime sovereignty SOV-4 · SOV-615
Closed source, runtime with the vendor

SOV codes: the matching objective in the European Commission's Cloud Sovereignty Framework. Official source

How the score is calculated

Facts and evidence

Last checked October 11, 2026

Headquarters	US (US)Verified by hand
EU adequacy decision	Only for companies individually certified under the EU-US Data Privacy FrameworkVerified by hand
Sovereignty model	Vendor-hosted (non-EU)Verified by hand
Data hosting	USVerified by hand
Open-source	NoVerified by hand
GDPR-compliant	YesVendor-stated
Category	Identity
Type	Product
Website	clerk.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Clerk

The European alternatives to Clerk come from our knowledge base of over 6,800 vendors. We only list vendors headquartered in the EU or the EEA; fully European-owned vendors rank before vendors with a foreign owner. For each alternative you see the country, the open-source status and a short description.

Score per alternative: 0 = high exposure, 100 = sovereign

58 European Identity vendors are in the catalogue. View the whole category · Submit an alternative · View category on the map

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Why digital sovereignty matters with Clerk

Clerk is headquartered in the United States. US vendors fall under the CLOUD Act and FISA 702: US authorities can compel access to data, even when that data sits in a European data centre. That is the core of the jurisdictional exposure in our model.

Clerk hosts data outside the EU (US). Personal data therefore leaves the EU, which requires a transfer mechanism under the GDPR and pulls the data residency score down.

Clerk is closed source and hosted by the vendor. The encryption keys and the runtime sit with the vendor and switching requires data migration. Ask about bring-your-own-key, export options and open standards.

What this means for your organisation depends on your whole stack and context. The free assessment weighs Clerk together with your other vendors and gives a total score, a heatmap and the main risk drivers.

Frequently asked questions

What is the best European alternative to Clerk?

It depends on your use case. Strong EU alternatives to Clerk include Adnovum, Airlock and Auðkenni. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Clerk?

Our list of EU alternatives to Clerk is mostly commercial options. Browse the category on the map for open-source choices.

Is Clerk GDPR-compliant and where is the data hosted?

Clerk is headquartered in US and hosts data in US. The vendor states it is GDPR-compliant, but the data falls under non-EU jurisdiction. For full EU data residency the EU alternatives on this page usually offer more certainty.

Details and sources

Verified by handHeadquarters, owner, hosting locations and licence have been checked by us against public sources. Free of charge and for every vendor, not a paid label. Nothing in this knowledge base is taken over automatically. Last checked on October 11, 2026.

Sources

Public sources used in the latest check of this record.

Compliance evidence

The links below point to the vendor's own public documents. We only record what we found: a missing link means "not found publicly", not "not compliant".

No public compliance evidence has been recorded for this vendor yet. Do you know its DPA or subprocessor list? Something wrong? Suggest a correction

Digital sovereignty in Identity

Identity: Identity and access management — SSO, MFA, directory services. In this category the choice of vendor determines who has legal access to your data, where that data lives and how easily you can switch later.

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