Keybase Chat - End-to-end encrypted chat built into Keybase
FriendLife - FriendLife is a great and interesting way of making new and dashing friends for free.
Hermes - Pandora Client for OS X
Twoo - With the millions of active and interesting people around the world, Twoo is one of the most interesting and practical means for finding the new people across the globe.
Brie.fi/ng - Start secure group video chat
YEO Messaging - Next generation communication platform, for your eyes only