EU sovereignCollaborationHeadquarters: CH

Proton: sovereignty score and 8 European alternatives

Proton is a privacy-focused provider of connected services: Proton Mail, Calendar, Drive, VPN, Pass, Docs, Sheets, Meet, Wallet and Authenticator, plus Proton for Business for organisations. The services are delivered as SaaS and through apps. According to Proton, end-to-end encryption is the foundation: message content in Mail, files in Drive, calendar events and credentials in Pass are encrypted, and Proton states it cannot access customer data. The company reports ISO 27001 certification and a SOC 2 Type II audit.

Proton AG is headquartered in Plan-les-Ouates near Geneva, Switzerland, and its primary shareholder is the non-profit Proton Foundation; the company says it has no venture capital investors. Swiss law applies to the company. Proton operates data centres in Switzerland, Germany and Norway (as of December 2024). According to Proton, its apps are open source and independently audited. Switzerland is not an EU member state but an EFTA country, so for a European organisation Swiss jurisdiction is a deliberate consideration alongside the GDPR.

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Sovereignty score

69 / 1000 = high exposure
100 = sovereign

Jurisdiction SOV-2100
Headquartered in Switzerland: Swiss law, recognised by the EU as adequate
Data residency SOV-390
Hosting in the EU and Switzerland
Cryptographic key sovereignty SOV-360
Key management with a European vendor
Freedom from lock-in SOV-640
Closed source: switching requires data migration
Source & runtime sovereignty SOV-4 · SOV-655
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 9, 2026

Headquarters	CH (EU)Verified by hand
Sovereignty model	Vendor-hosted (EU)Verified by hand
Data hosting	CH, EUVerified by hand
Open-source	NoVerified by hand
GDPR-compliant	YesVendor-stated
Compliance documents	1 published, see belowVendor-stated
Hosting signal	PROTON - Proton AG, CH (CH)Technically measured
Category	Collaboration
Type	Product
Website	proton.me ↗

The hosting signal shows the network that serves the vendor's website, often a CDN, and not necessarily where the service or your data is hosted. How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Proton

The European alternatives to Proton come from our knowledge base of over 6,800 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

37 European Collaboration 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 Proton

Proton is headquartered in Switzerland and falls under Swiss law, including the revised Swiss data protection act. Switzerland is not an EU member, but the European Commission recognises its level of data protection as adequate. Its Swiss headquarters does not by itself bring it under US legislation such as the CLOUD Act.

Proton hosts data in the EU and in Switzerland. Switzerland is covered by a European Commission adequacy decision, so personal data can go there without extra safeguards. If you require strictly EU hosting, check the data processing agreement for which data is stored in Switzerland.

Proton 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 Proton 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 Proton?

It depends on your use case. Strong EU alternatives to Proton include BigBlueButton (self-host), CryptPad and Nextcloud Deck. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Proton?

Yes. Open-source EU alternatives to Proton include BigBlueButton (self-host), CryptPad, Nextcloud Deck, FluffyChat and HedgeDoc. These keep your data fully under your own control and let you self-host if you want to.

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

Proton is headquartered in CH (EFTA) and hosts data in CH, EU. That makes Proton 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 9, 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".

Security page / trust center: proton.me/business/trust

Provenance of the links above:Vendor-stated

Links checked on September 21, 2026.

Digital sovereignty in Collaboration

Collaboration: Team communication, file sharing, video conferencing, document editing. 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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