Wire
EFTA verifiedSecure, open-source team communication from Switzerland/Germany – end-to-end encrypted chat, calls and files, self-hostable.
Wire is a secure collaboration platform by Wire Swiss GmbH (Zug, with development in Berlin) offering end-to-end encrypted chat, voice and video calls, conferences and file sharing. Both client and server code are open source; organizations can self-host Wire with the open-source server or use the hosted version, which according to the provider runs in EU data centers (Germany, Ireland) and is ISO 27001/27701 certified. With its dual Swiss/EU setup and independent security audits, Wire is a sovereign European alternative to Slack or Microsoft Teams – especially for public authorities, regulated industries and teams with high confidentiality requirements.
Note on ownership: Wire Swiss GmbH based in Zug (Switzerland) with a development center in Berlin – a dual Swiss/EU setup with no US CLOUD Act exposure. Client and server code are open source (clients GPLv3, server AGPL) and self-hostable. Chat, voice/video calls and files are end-to-end encrypted; independent audits (e.g. Kudelski, X41) exist. The hosted service stores data, according to the provider, in EU data centers (Germany, Ireland) and is ISO 27001 and ISO 27701 certified.
Strengths
- End-to-end encrypted chat, calls and files
- Client and server open source, self-hostable
- Swiss/EU setup, EU data centers, ISO 27001/27701
- Independent security audits available
Weaknesses
- Smaller integration ecosystem than Slack/Teams
- Self-hosting (Kubernetes stack) requires operational expertise
- Fewer app marketplace and automation options than large US providers
Best for
- • Public authorities and regulated industries
- • Teams with high confidentiality requirements
- • Organizations replacing Slack/Teams in a sovereign way
Less suited for
- • Teams relying on many Slack/Teams-specific integrations
Sovereignty Score & weitere Bewertungen
Hohe Vertraulichkeit durch E2E-Verschlüsselung, quelloffen und self-hostbar; Schweiz/EU-Sitz mit EU-Rechenzentren und ISO 27001/27701.
The Sovereignty Score is an editorial orientation aid, not legal advice. How we rate.
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Sources & notes
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