Matrix collaboration that several European governments already run on their own infrastructure.
Alternatives
Alternatives to Microsoft Teams
2 tools2 tools in this directory are filed as a practical replacement for Microsoft Teams. Every entry names what it costs where that has been checked, and the country its operator is based in.
spanningMessaging & Meetings
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Berlin-built encrypted messaging and conferencing on the MLS standard, deployed in regulated settings.
Replacing more than Microsoft Teams?
The same tools also replace these.