Keybase Chat - End-to-end encrypted chat built into Keybase
PostgreSQL - PostgreSQL is a powerful, open source object-relational database system.
Pithos - pithos is a daemon which provides an S3-compatible frontend for storing files in a Cassandra cluster.
MySQL - The world's most popular open source database
Pandora - Pandora Radio is a free (ad-supported) internet radio founded in 2000.
Microsoft SQL - Microsoft SQL is a best in class relational database management software that facilitates the database server to provide you a primary function to store and retrieve data.