BlockCypher - AWS for Block Chains
RabbitMQ - RabbitMQ is an open source message broker software.
Hyperledger - Hyperledger is a multi-project open source collaborative effort hosted by The Linux Foundation, created to advance cross-industry blockchain technologies.
Ethereum - Ethereum is a decentralized platform for applications that run exactly as programmed without any chance of fraud, censorship or third-party interference.
Blockpit - Keep track of your crypto portfolio & taxes in one place
Nxt Platform - Ardor is a cryptocurrency and blockchain technology platform with tools to build successful blockchain applications out of the box. Scalable and easy to use.