Meshtastic is… okay, but I was seriously put off the fact that a node can’t work with multiple clients (like phone and desktop) cooperatively, even with TCP transports. And that’s a protocol design issue, it has single client in mind. Virtual nodes didn’t work for me (I verified every configurable knob but I haven’t bothered debugging what goes on under the hood).

But it’s the only radio-based mesh network I’ve ever “seen” anyone else on.