Keybase Chat - End-to-end encrypted chat built into Keybase
Hermes - Pandora Client for OS X
pianobar - “pianobar” is a free/open-source, console-based replacement for ...
Brie.fi/ng - Start secure group video chat
Pithos - pithos is a daemon which provides an S3-compatible frontend for storing files in a Cassandra cluster.
dPhone - The most secure calling app. Open Source and Free.