Pithos - pithos is a daemon which provides an S3-compatible frontend for storing files in a Cassandra cluster.
Grafomap - A map poster of your favourite place on earth
Pandora - Pandora Radio is a free (ad-supported) internet radio founded in 2000.
TiltMaps - Create map posters of your favorite places & memories.
Keybase Chat - End-to-end encrypted chat built into Keybase
Craft & Oak - Beautiful, minimalistic custom map posters