EU Sovereignty Score
EU sovereignMessagingHeadquarters: CH

Session: sovereignty score and 8 European alternatives

Session is a decentralised, end-to-end encrypted messenger for Android, iPhone and desktop. An account works with an Account ID; no phone number or email address is needed. The app offers disappearing messages, group chats and Community chats for large groups. Messages travel by onion routing across a network of community-run nodes. A swarm of five to seven nodes holds messages temporarily; they are deleted after a fixed time-to-live and are not stored on a blockchain. According to Session, no single server sees both who sends a message and where it goes.

Session is stewarded by the Session Technology Foundation, a Swiss non-profit. Until October 2024 an Australian foundation held that role. The code is open source, according to Wikipedia under licences including BSD-3-Clause, MIT and GPL-3.0. The geographic location of nodes and servers is not stated, since nodes are run by the community. For push notifications and calls the foundation operates its own push and STUN/TURN servers. A European organisation therefore gets a Swiss steward, but no visibility into where the nodes are located.

See the 8 European alternatives ↓Assess your stack with Session pre-selected
Sovereignty score
94 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-2100
    Headquartered in Switzerland: Swiss law, recognised by the EU as adequate
  • 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 July 2, 2026
HeadquartersCH (EU)Verified by hand
Sovereignty modelVendor-hosted (non-EU)Verified by hand
Data hostingEUVerified by hand
Open-sourceYesVerified by hand
GDPR-compliantYesVendor-stated
Compliance documents1 published, see belowVendor-stated
Hosting signalCLOUDFLARENET - Cloudflare, Inc., US (US)Technically measured
CategoryMessaging
TypeProduct
Websitegetsession.org ↗

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 Session

The European alternatives to Session come from our knowledge base of over 6,200 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

21 European Messaging 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 Session

Session 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.

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

Session 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 Session 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 Session?

It depends on your use case. Strong EU alternatives to Session include Conversations (XMPP), Delta Chat and Dino. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Session?

Yes. Open-source EU alternatives to Session include Conversations (XMPP), Delta Chat, Dino, Olvid, Quicksy, Tox and Wire. These keep your data fully under your own control and let you self-host if you want to.

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

Session is headquartered in CH (EFTA) and hosts data in EU. It is also open-source, so you can self-host it. That makes Session 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 July 2, 2026.

Sources

This record was checked via the vendor's website and legal notice during the full audit of June and July 2026. Source links have been recorded per record since 20 September 2026.

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
getsession.org/terms-of-service

Provenance of the links above:Vendor-stated

Links checked on September 23, 2026.

Digital sovereignty in Messaging

Messaging: Personal messaging — chat, group conversations, media sharing. 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 Session — GDPR-compliant & EU-hosted · EU Sovereignty Score