EU Sovereignty Score
Self-hosted / open sourceAIHeadquarters: NL

OpenVoiceOS: sovereignty score and 8 European alternatives

OpenVoiceOS (OVOS) is an open voice AI platform for building voice-controlled interfaces across a range of devices. It is positioned as a privacy-focused alternative to commercial voice assistants and builds on the Mycroft project. The platform is modular, supports multiple languages, can run offline according to its makers, and is delivered as software and an operating system image that you install yourself and extend with your own skills and plug-ins.

OpenVoiceOS is run by the OVOS Foundation (Stichting OVOS), a non-profit foundation under Dutch law. The software is released under the Apache License 2.0, and because you run the platform on your own devices or servers, voice commands and data stay under your own control; no vendor cloud is required. Its further development towards a first stable release is co-funded through NLnet and the NGI Zero Commons Fund of the EU's Next Generation Internet programme.

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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 16, 2026
Headquarters
NL (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
AI
Type
Product
Website
openvoiceos.org ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to OpenVoiceOS

The European alternatives to OpenVoiceOS come from our knowledge base of over 9,500 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

99 European AI 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 OpenVoiceOS

OpenVoiceOS is headquartered in NL 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 OpenVoiceOS scores best on data residency.

OpenVoiceOS 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 OpenVoiceOS 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 OpenVoiceOS?

It depends on your use case. Strong EU alternatives to OpenVoiceOS include Acapela Group, AI Horde and aiaibot. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to OpenVoiceOS?

Yes. Open-source EU alternatives to OpenVoiceOS include AI Horde. These keep your data fully under your own control and let you self-host if you want to.

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

OpenVoiceOS is headquartered in NL (EU) and hosts data in EU. It is also open-source, so you can self-host it. That makes OpenVoiceOS 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 16, 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 AI

AI: Artificial intelligence — large language models, translation, generative AI. 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 OpenVoiceOS — GDPR-compliant & EU-hosted · EU Sovereignty Score