While trying to fall asleep, I came to the conclusion that a solution to privacy would be an encrypted p2p messenger. You'd need a dns-like system that can tell the peers how to contact their communication partners. Then I searched for one, and there was a good looking one, but it wasn't open source. looks secure otherwise, but perfection looks different.

Can anyone recommend something similar to kripter/tell me why it would be secure/insecure to use their service instead of, say, signal? Not that I truly NEED this, but I at least want to try it :)