[Canada]

Signal and WhatsApp both support multi-device encrypted chats. Signal is better than WhatsApp in this respect as your primary device doesn't need to be online for it to work.

[NoGravitas]

Signal multi-device support is very limited. Doesn't support multiple mobile devices. Primary device must be a phone, all others must be desktop computers with Chrome.

[newman314]

This. I would love for Signal to have multiple mobile device support.

[Canada]

True, though that's a gap in UI rather than a constraint of the protocol.

[tgragnato]

If you want to use a standalone app then you can achieve it using NW.js

https://timtaubert.de/blog/2016/01/build-your-own-signal-des...