EU Sovereignty Score
Self-hosted / open sourceData Governance & MDMHeadquarters: IT

ShowVoc: sovereignty score and 8 European alternatives

ShowVoc is a web platform for publishing and consulting OWL ontologies, SKOS and SKOS-XL thesauri, Ontolex-lemon lexicons and generic RDF datasets. It offers a browsing environment for the content, a global search across datasets and a translation API for multilingual terms. It is delivered as source code and an installation package (a web archive or a static front end) and runs on top of the Semantic Turkey RDF service.

ShowVoc is developed by the ART research group at the University of Rome Tor Vergata in Italy, which also holds the copyright. According to the project site it was first funded by the European Commission's ISA² programme and is now funded by the Digital Europe Programme. The licence is BSD-3-Clause, an OSI-approved open-source licence. You can install it yourself, so that vocabularies and data stay on your own infrastructure. The project site lists no hosted service from the developers. The source code is actively updated.

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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
IT (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 Governance & MDM
Type
Product
Website
showvoc.uniroma2.it ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to ShowVoc

The European alternatives to ShowVoc come from our knowledge base of over 9,300 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

33 European Data Governance & MDM 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 ShowVoc

ShowVoc is headquartered in IT 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 ShowVoc scores best on data residency.

ShowVoc 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 ShowVoc 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 ShowVoc?

It depends on your use case. Strong EU alternatives to ShowVoc include Accutics, Amnesia and Anjana Data. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to ShowVoc?

Yes. Open-source EU alternatives to ShowVoc include Amnesia, ARX Data Anonymization Tool and Data Contract CLI. These keep your data fully under your own control and let you self-host if you want to.

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

ShowVoc is headquartered in IT (EU) and hosts data in EU. It is also open-source, so you can self-host it. That makes ShowVoc 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 Governance & MDM

Data Governance & MDM: Data catalogues, lineage, data quality, ownership and master data 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.

Also in this category

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8 European alternatives to ShowVoc — GDPR-compliant & EU-hosted · EU Sovereignty Score