For offline messaging over Bluetooth/Wi-Fi without internet or central infrastructure, I saw these recommended by ChatGPT Deep research and they seem current:
Bridgefy (Android & iOS) – direct Bluetooth mesh within ~100 m, instant one-to-one & group chat, <1 min install.
Berty (Android & iOS) – E2E-encrypted over Bluetooth/Wi-Fi; Briar (Android) – E2E-encrypted over Bluetooth/Wi-Fi with Tor fallback.
Manyverse (Android, iOS, Desktop) – offline-first social feed that syncs posts over Bluetooth/Wi-Fi when peers meet.
Can anyone vouch for these or know better?
Whoever downvoted, a comment explaining why would be nice, when the cell tower generators are out, and there is only phone battery left, offline communication options could be useful, I'm glad I'm not in that position right now.
Seems like some people are not interested in honest and useful feedback because this got downvoted too! I thought it made clear points about an important topic. Well, whoever sees fit to do this, I hope you get whatever it is you want.