Datahike - A durable datalog database adaptable for distribution.
RabbitMQ - RabbitMQ is an open source message broker software.
Datomic - The fully transactional, cloud-ready, distributed database
Ethereum - Ethereum is a decentralized platform for applications that run exactly as programmed without any chance of fraud, censorship or third-party interference.
Matisse - Matisse is a post-relational SQL database.
Hyperledger - Hyperledger is a multi-project open source collaborative effort hosted by The Linux Foundation, created to advance cross-industry blockchain technologies.