Kypeless
Fully decentralised secure p2p communication program
Kypeless encapsulates strong symmetric and asymmetric cryptography so you can get the benefits of secure communication following some simple steps.
Right now, Kypeless is unstable pre-alpha software, published only for testing purposes.
Kypeless allows you to exchange instant messages, long not-so-instant messages and files, but a lot more features are planned to be implemented later.