I want to selfhost a messaging service for my family. It should be secure and have voice calling option, ideally. Thank you.
Mattermost is really nice. They added voice calling as a beta feature a while ago and it works pretty good so far.
Also a vote for Matrix and Synapse. Works great and you can decide if you federate or not.
Why? Existing platforms, especially the plain cell network, are going to be far more compatible and reliable.
Cellphone network calls / texts aint secure at all. If you want to communicate in a secure way you need to use another seevice/app.
Many stated matriy as selfhostable service and i totally agree. Signal/Threema are also good options If you dont want to selhost.
Since we use Nextcloud, we just use Talk. It works well enough for us, but you should also host a TURN/STUN Server with that.
