Pithos - pithos is a daemon which provides an S3-compatible frontend for storing files in a Cassandra cluster.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Keybase Chat - End-to-end encrypted chat built into Keybase
Brevo - Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.
Pandora - Pandora Radio is a free (ad-supported) internet radio founded in 2000.
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.