RabbitMQ - RabbitMQ is an open source message broker software.
CloudMQTT - CloudMQTT implements MQ Telemetry Transport protocol for carrying out messaging using a publish/subscribe message queueing model.
Ethereum - Ethereum is a decentralized platform for applications that run exactly as programmed without any chance of fraud, censorship or third-party interference.
EMQX Enterprise - Self-managed scalable and reliable MQTT messaging platform, an all-in-one distributed MQTT broker with multiple protocol gateways and a powerful built-in SQL-based IoT rule engine.
Hyperledger - Hyperledger is a multi-project open source collaborative effort hosted by The Linux Foundation, created to advance cross-industry blockchain technologies.
HiveMQ - HiveMQ is the MQTT based messaging platform for fast, efficient and reliable data movement to and from connected IoT devices and enterprise systems