Pithos - pithos is a daemon which provides an S3-compatible frontend for storing files in a Cassandra cluster.
PayPal - PayPal is the faster, safer way to pay online without sharing financial details, send and receive money or accept credit and debit cards as a seller
Pandora - Pandora Radio is a free (ad-supported) internet radio founded in 2000.
Stripe - Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes. Use Stripe’s payment platform to accept and process payments online for easy-to-use commerce solutions.
Keybase Chat - End-to-end encrypted chat built into Keybase
Braintree - An all-in-one solution to accept, process, and split payments in your mobile app or online - from small business to large enterprise.