EU Sovereignty Score
Non-EU vendorDatabase & Data ManagementHeadquarters: US

Hazelcast: sovereignty score and 8 European alternatives

Hazelcast is a real-time data platform, implemented in Java, that combines an in-memory data store with stream processing for distributed applications that need fast and resilient access to data. It is developed by Hazelcast, headquartered in Palo Alto, California. The platform exists as an open-source edition under the Apache 2.0 licence and as a proprietary enterprise edition.

Hazelcast is privately held and backed by venture and development-finance investors, among them Earlybird, the European Bank for Reconstruction and Development and Bain Capital; the vendor's public pages name no single majority owner. Its US headquarters makes US jurisdiction the main legal consideration for the vendor. The vendor's public pages do not state where Hazelcast cloud services store data, so EU hosting cannot be confirmed. Organisations that run the open-source edition on their own infrastructure keep data under their own control, provided they check the licence terms of the components they use.

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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
HeadquartersUS (US)Verified by hand
EU adequacy decisionOnly for companies individually certified under the EU-US Data Privacy FrameworkVerified by hand
Sovereignty modelVendor-hosted (non-EU)Verified by hand
Data hostingUSVerified by hand
Open-sourceNoVerified by hand
GDPR-compliantNoVendor-stated
CategoryDatabase & Data Management
TypeProduct
Websitehazelcast.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Hazelcast

The European alternatives to Hazelcast come from our knowledge base of over 6,200 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

13 European Database & Data Management 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 Hazelcast

Hazelcast 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.

Hazelcast 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.

Hazelcast 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 Hazelcast 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 Hazelcast?

It depends on your use case. Strong EU alternatives to Hazelcast include Aiven, ArangoDB and DuckDB. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Hazelcast?

Yes. Open-source EU alternatives to Hazelcast include DuckDB, Elastic, Firebird SQL, MariaDB and Meilisearch. These keep your data fully under your own control and let you self-host if you want to.

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

Hazelcast is headquartered in US and hosts data in US. Its GDPR compliance is limited or unclear. 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 Database & Data Management

Database & Data Management: Database systems, data warehousing, managed database services and data platforms. 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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8 European alternatives to Hazelcast — GDPR-compliant & EU-hosted · EU Sovereignty Score