After the Tchap project based on Matrix, the French Prime Minister asks anyone in the gouvernement to use Olvid, the only app validated by the ANSSI, with metadata encryption and no centralised architecture nor contacts discovery. But only the front-ends are open source, not the back-end.
Olvid seems okay, but I find it weird that they advertise the fact that they don’t need to trust their servers as a feature somehow unique to them. Yeah, their “lack of centralized user directory” USP is a good feature (or lack thereof), but in the end it’s “yet another secure messenger”, even tough their github specificially says it’s not.
If it were federated (as far as I can tell it’s not), then it would be a different matter. That would be a great USP. Kind of like Tox, but federated instead of P2P.