Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.
MyChat - Secure instant messenger for any network
Blur - Blur is a software application available for both Google Chrome and your smartphone. It's developed by Abine, an online privacy company trusted by more than twenty million people. Read more about Blur.
Ubiq Security - Enable developers to build encryption into apps in minutes
BURN.link - Send secure, encrypted, self-destructing messages
Keybase for Mobile - End-to-end encryption messaging platform