EU sovereignCybersecurityHeadquarters: AT

ZeroSSL: sovereignty score and 8 European alternatives

ZeroSSL is a certificate authority operated by ZeroSSL GmbH in Vienna. It issues TLS certificates for domains and websites, and offers one-step validation, ACME automation for renewal, a REST API for certificate management, SSL monitoring and an enterprise certificate tier. Administrators and developers use it to automate the certificate lifecycle on web servers and backend systems.

The company is based in Austria, and its terms are governed by Austrian law. Certificates are issued under the Sectigo Certificate Subscriber Agreement, as the terms state, so the trust chain relies on a third-party certificate authority. The privacy policy states that account and certificate data is hosted on Amazon Web Services without naming a region, and that some service providers may transfer personal data to recipients outside the EEA, including the United States, under safeguards. European organisations weigh this when relying on the service for publicly trusted certificates.

See the 8 European alternatives ↓Assess your stack with ZeroSSL pre-selected

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Sovereignty score

59 / 1000 = high exposure
100 = sovereign

Jurisdiction SOV-2100
Headquartered in the EU: European law applies
Data residency SOV-350
Hosting inside and outside Europe (EU, US)
Cryptographic key sovereignty SOV-360
Key management with a European vendor
Freedom from lock-in SOV-640
Closed source: switching requires data migration
Source & runtime sovereignty SOV-4 · SOV-645
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 12, 2026

Headquarters	AT (EU)Verified by hand
Sovereignty model	Vendor-hosted (EU)Verified by hand
Data hosting	EU, USVerified by hand
Open-source	NoVerified by hand
GDPR-compliant	YesVendor-stated
Category	Cybersecurity
Type	Product
Website	zerossl.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to ZeroSSL

The European alternatives to ZeroSSL come from our knowledge base of over 8,000 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

124 European Cybersecurity 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 ZeroSSL

ZeroSSL is headquartered in AT and therefore falls under European law: the GDPR, NIS2 and the Data Act. No foreign legislation can compel access to your data.

ZeroSSL hosts data in EU, US. Exactly what stays within the EU — and what does not — is defined by the vendor's data processing agreement and sub-processor list, not by a setting you control yourself; check those documents for the precise scope, including backups, logs and support access.

ZeroSSL 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 ZeroSSL 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 ZeroSSL?

It depends on your use case. Strong EU alternatives to ZeroSSL include Actalis, Advenica and Aikido Security. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to ZeroSSL?

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

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

ZeroSSL is headquartered in AT (EU) and hosts data in EU, US. That makes ZeroSSL an EU-sovereign choice in its own right; the EU alternatives on this page are comparable European tools.

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 12, 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

Cyber Resilience Act

Public signals that relate to the EU Cyber Resilience Act. They do not count towards the score. A missing line means "not found publicly".

We found none of these signals on the vendor's own site when we checked.

For products in scope of the CRA, CE marking is required from 11 December 2027; this cannot be checked yet.

Checked on October 12, 2026. What is the Cyber Resilience Act?

Digital sovereignty in Cybersecurity

Cybersecurity: Threat detection, endpoint protection, SIEM, vulnerability management. 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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