European alternatives to Microsoft Teams

1

Wire

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.

2

Nextcloud

Nextcloud is the leading open-source alternative to cloud suites such as Google Workspace or Microsoft 365. Self-hosted or operated through a European provider, Nextcloud combines file sharing, calendar, contacts, video calls and office editing. Full data sovereignty is therefore central. The Community Edition (AGPLv3) is free for unlimited users – only the costs of your own server apply; Nextcloud Enterprise with support starts at around €69 per user per year (from 100 users).

3

Jitsi Meet

Jitsi Meet is a well-known open-source solution (Apache 2.0) for video conferencing. Self-hosted on European servers, it gives you full control over the data and a free Zoom alternative. It should be noted that the project has been backed by the US company 8x8 since 2018: the public instance meet.jit.si runs on AWS and requires sign-in with Google, GitHub or Facebook for some features – for data-sensitive use, self-hosting in the EU is therefore recommended.