SovEU · Atlas · European alternatives · chat
European alternatives to Slack
European companies mapped as alternatives to Slack. Each carries an evidence-led sovereignty profile — jurisdiction, hosting, US exposure, DPA and more — reviewed by SovEU. Profiles are descriptive, not a compliance verdict.
6 alternatives
Secure messaging and collaboration client built on the open Matrix protocol, developed by Element (New Vector Ltd) in the UK; self-hostable.
Open-source, self-hostable messaging and collaboration platform. The company is US-based; the software is widely self-hosted within Europe.
Open-source team communication platform; the company is registered in Germany and the software is self-hostable.
End-to-end encrypted collaboration and messaging platform operated by Wire Swiss GmbH / Wire GmbH, with European hosting; clients are open source.
Encrypted team collaboration and project management tool operated by Stackfield GmbH in Munich, Germany, with German hosting.
End-to-end encrypted messenger operated by Threema GmbH in Switzerland, with Swiss hosting; the apps are open source.