RingCentral - RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies
Pithos - pithos is a daemon which provides an S3-compatible frontend for storing files in a Cassandra cluster.
Dialpad - Switch is a cloud-based phone system built for Google Apps users.
Pandora - Pandora Radio is a free (ad-supported) internet radio founded in 2000.
Aircall - Aircall is a call center software of a new generation designed for fast growing companies. Setup instantly and integrates to your CRMs
Keybase Chat - End-to-end encrypted chat built into Keybase