I'm thinking of the things listed on the Privacy Guides real-time communication section
https://www.privacyguides.org/en/real-time-communication/
I'm thinking of the things listed on the Privacy Guides real-time communication section
https://www.privacyguides.org/en/real-time-communication/
Let's not forget that for those looking for alternatives, a key feature of signal is/was its SMS integration.
I use silence, a fork of signal.