RabbitMQ - RabbitMQ is an open source message broker software.
ChangeTip for iPhone - Send and receive dollars and bitcoin on social (with emoji!)
Ethereum - Ethereum is a decentralized platform for applications that run exactly as programmed without any chance of fraud, censorship or third-party interference.
Facebook Pay - Send money to your friends via Messenger
Hyperledger - Hyperledger is a multi-project open source collaborative effort hosted by The Linux Foundation, created to advance cross-industry blockchain technologies.
Square Cash - Email money to Anyone