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Best European alternatives to Mattermost in 2026

We found 1 EU-built alternative to Mattermost — GDPR-native, with verified data sovereignty and transparent rankings. No pay-to-win.

1 EU-built alternative to Mattermost

Element

Video Conferencing

EU Based

Element is a secure, decentralized messaging and collaboration platform built on the Matrix protocol. It offers end-to-end encrypted chat, voice, and video calls across all major platforms, with self-hosting options and bridges to tools like Slack and Teams.

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