Pithos - pithos is a daemon which provides an S3-compatible frontend for storing files in a Cassandra cluster.
Ring4 - Manage business phone line as easily as you manage emails, in the cloud. Ring4 provide you with a business line and video conferencing solution.
Pandora - Pandora Radio is a free (ad-supported) internet radio founded in 2000.
SpotMenu - Spotify and iTunes in your macOS menu bar
Keybase Chat - End-to-end encrypted chat built into Keybase
OpenPhone - Simplest way to own a business phone number