RabbitMQ - RabbitMQ is an open source message broker software.
Zabbix - Track, record, alert and visualize performance and availability of IT resources
Ethereum - Ethereum is a decentralized platform for applications that run exactly as programmed without any chance of fraud, censorship or third-party interference.
Datadog - See metrics from all of your apps, tools & services in one place with Datadog's cloud monitoring as a service solution. Try it for free.
Hyperledger - Hyperledger is a multi-project open source collaborative effort hosted by The Linux Foundation, created to advance cross-industry blockchain technologies.
Prometheus - An open-source systems monitoring and alerting toolkit.