France will replace Microsoft Teams, Google Meet, Zoom, Webex and others with its own sovereign video conferencing application "Visio" for public officials

https://lemmus.org/post/19676136

Looks like this is it, but it’s called “Meet” here:
This looks suspiciously similar to element call
Element is open source, so I would be very unsurprised to learn it’s an Element fork.
Nice article, but sounds like he only had access to conversations available to every single government employee? He wasn’t able to crack into any direct messages or channels that he didn’t get an invite for.
Tchap secure app | French government | Matrix

Tchap is the French government's digital sovereign secure messaging and collaboration app. It is a Matrix-based, on-premise messenger and collaboration platform. The group messenger and collaboration tool supports more than 300,000 users across the French civil service.