EU Sovereignty Score
Self-hosted / open sourceDatabase & Data ManagementHeadquarters: GB

XTDB: sovereignty score and 8 European alternatives

XTDB is an open-source SQL database built around a bitemporal history, recording both when data was valid and when it was recorded, so past states can be queried with time-travel SQL. Its storage uses immutable object storage. It can be started from a Docker image and queried with PostgreSQL-compatible tools, and it is also available through the AWS, Google Cloud and Microsoft Azure marketplaces. The project positions it for auditable reporting and decision-making.

XTDB is built by JUXT, whose head office is in London, United Kingdom; JUXT Ltd holds the copyright. The United Kingdom is outside the EU, so the company is not subject to EU jurisdiction. The code is licensed under the Mozilla Public License 2.0 and can be run on-premises. A deployment through a US cloud marketplace is subject to that provider's terms, while on-premises use keeps the data on infrastructure the organisation chooses.

See the 8 European alternatives ↓Assess your stack with XTDB pre-selected
MastodonLinkedInBlueskyXEmail
Sovereignty score
77 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-250
    Headquartered outside the EU (GB)
  • Data residency SOV-3100
    No hosting in Europe (OTHER)
  • Cryptographic key sovereignty SOV-390
    Self-hostable: encryption keys under your own control
  • Freedom from lock-in SOV-680
    Open source: low switching costs
  • Source & runtime sovereignty SOV-4 · SOV-665
    Source code auditable, forkable and self-hostable

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
GB (OTHER)Verified by hand
EU adequacy decision
Yes — found adequate by the European CommissionVerified by hand
Sovereignty model
Open-source, distributedVerified by hand
Data hosting
OTHERVerified by hand
Open-source
YesVerified by hand
GDPR-compliant
NoVendor-stated
Category
Database & Data Management
Type
Product
Website
xtdb.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to XTDB

The European alternatives to XTDB come from our knowledge base of over 7,800 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

14 European Database & Data Management vendors are in the catalogue. View the whole category · Submit an alternative · View category on the map

Is XTDB one of many dependencies?

Score your whole stack in about three minutes. Free, no account needed.

Assess your stack →View a sample report (opens in a new tab)

Why digital sovereignty matters with XTDB

XTDB is headquartered in GB, outside the EU. Contracts and data therefore also fall under non-European law. The GDPR applies through contractual terms, but in a conflict with local legislation you have less certainty than with a European vendor.

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

XTDB is open source. You can audit the source code, self-host the software and keep the encryption keys under your own control. Switching is easier because data and software are not tied to a single party.

What this means for your organisation depends on your whole stack and context. The free assessment weighs XTDB 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 XTDB?

It depends on your use case. Strong EU alternatives to XTDB 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 XTDB?

Yes. Open-source EU alternatives to XTDB 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 XTDB GDPR-compliant and where is the data hosted?

XTDB is headquartered in GB (OTHER) and hosts data in OTHER. 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 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

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.

Also in this category

See all →
Open in the alternatives dashboardMissing a vendor? Submit itAre you this vendor? You can also become a sponsor on the Database & Data Management page — with no effect on your score
8 European alternatives to XTDB — GDPR-compliant & EU-hosted · EU Sovereignty Score