If I may derail this thread even further:
I find XMPP+OMEMO even better. The security concept is basically identical to Signal but users don't have to rely on particular servers and a widespread adaption would end the problem that people who use different servers/clients can't talk to each other.
Also, there are great apps for XMPP. For desktop user there is Gajim[0], for Android there is conversations[1] and the apple folks have ChatSecure [2].
If I may derail this thread even further: I find XMPP+OMEMO even better. The security concept is basically identical to Signal but users don't have to rely on particular servers and a widespread adaption would end the problem that people who use different servers/clients can't talk to each other.
Also, there are great apps for XMPP. For desktop user there is Gajim[0], for Android there is conversations[1] and the apple folks have ChatSecure [2].
[0] https://gajim.org/ [1] https://conversations.im/ [2] https://chatsecure.org/