Keybase Chat - End-to-end encrypted chat built into Keybase
SoundCloud - Enjoy music & follow favourite artists
Pithos - pithos is a daemon which provides an S3-compatible frontend for storing files in a Cassandra cluster.
AutoBeat Player - Discover, share & play music from YouTube, SoundCloud, ..
Pandora - Pandora Radio is a free (ad-supported) internet radio founded in 2000.
JustStream - Screen-mirroring and streaming software for Mac