EU Sovereignty Score
Self-hosted / open sourceData Integration & ETLHeadquarters: FR

MentDB: sovereignty score and 8 European alternatives

MentDB is an open-source platform for data interoperability. Its so-called Weak edition combines ETL, ESB, SOA, a web application and simple AI features in a single data layer for connecting applications. The project states a goal of generalised interoperability between systems and uses its own query language, the Mentalese Query Language. It is meant for organisations and developers who need to exchange and transform data between applications. It is server software that you download and install yourself; the files are hosted on SourceForge.

MentDB is developed by Innov-AI, a research and development company on Réunion Island, France. The software is freely available under the GPLv3 licence. The website lists version 4.0.3 as stable and reports new features up to June 2026. Because you run it on your own infrastructure, your data stays within your organisation. No hosted service from the developer is described. It is a small project run by a single company, so continuity depends on that company.

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Sovereignty score
94 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-2100
    Headquartered in the EU: European law applies
  • Data residency SOV-3100
    EU-only hosting
  • 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-6100
    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 14, 2026
Headquarters
FR (EU)Verified by hand
Sovereignty model
Open-source, distributedVerified by hand
Data hosting
EUVerified by hand
Open-source
YesVerified by hand
GDPR-compliant
YesVendor-stated
Category
Data Integration & ETL
Type
Product
Website
mentdb.org ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to MentDB

The European alternatives to MentDB come from our knowledge base of over 9,200 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

27 European Data Integration & ETL 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 MentDB

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

Data is hosted exclusively in the EU, so MentDB scores best on data residency.

MentDB 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 MentDB 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 MentDB?

It depends on your use case. Strong EU alternatives to MentDB include Adverity, Axual and !MC5. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to MentDB?

Yes. Open-source EU alternatives to MentDB include dlt (dltHub). These keep your data fully under your own control and let you self-host if you want to.

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

MentDB is headquartered in FR (EU) and hosts data in EU. It is also open-source, so you can self-host it. That makes MentDB 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 14, 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

In the changelog

Earlier changes to this page, as listed in the public changelog.

Digital sovereignty in Data Integration & ETL

Data Integration & ETL: Data integration, ETL pipelines, data preparation and data quality 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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8 European alternatives to MentDB — GDPR-compliant & EU-hosted · EU Sovereignty Score