InfluxData - Scalable datastore for metrics, events, and real-time analytics.
RabbitMQ - RabbitMQ is an open source message broker software.
TimescaleDB - TimescaleDB is a time-series SQL database providing fast analytics, scalability, with automated data management on a proven storage engine.
Ethereum - Ethereum is a decentralized platform for applications that run exactly as programmed without any chance of fraud, censorship or third-party interference.
VictoriaMetrics - Cost-effective database for huge amounts of time series data
Hyperledger - Hyperledger is a multi-project open source collaborative effort hosted by The Linux Foundation, created to advance cross-industry blockchain technologies.