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European & open-source alternatives to Microsoft Teams

10 European and open-source alternatives to Microsoft Teams — privacy-friendly tools built and hosted in Europe.

Updated 9 Sep 2026 · refreshed weekly

French cloud phone system for sales and support teams, with CRM integrations, call routing, IVR and analytics that replace…

A Matrix-based end-to-end encrypted messenger and secure collaboration app. It combines consumer messaging apps, collaboration…

Berlin open-source video conferencing platform (EUPL) from Heinlein Support, targeting government and enterprise with digital…

Pexip is a video technology platform that provides secure, self-hosted video communication solutions, enabling seamless…

End-to-end encrypted video conferencing from Proton AG in Geneva, built on the MLS protocol so all audio, video, screen shares…

An all-in-one project management and collaboration tool designed for organizations handling sensitive data, such as government…

Threema Work is a highly secure and user-friendly communication solution for businesses, offering team chats, voice/video calls…

Open-source team collaboration suite (chat, drive, tasks) by France-based Linagora.

Italian unified communications company from Trento offering browser-based VoIP, video conferencing and team collaboration through…

A secure collaboration platform that offers encrypted messaging and communication tools for businesses and individuals, focusing…