For all those looking for messengers that are not controlled by organisations located in countries that are not or no longer democratic:

Check out the completely open source #DeltaChat that also is completely independent of any centralised infrastructure.

The project tries to be very transparent and the software is a marvelous and open-standards-based architecture (https://blog.feld.me/posts/2025/03/deltachat-is-actually-good-though/).

Last not least, the project is security audited (https://delta.chat/en/2024-03-25-crypto-analysis-securejoin)

Cc @delta