InfluxData - Scalable datastore for metrics, events, and real-time analytics.
Raygun - Raygun gives developers meaningful insights into problems affecting their applications. Discover issues - Understand the problem - Fix things faster.
TimescaleDB - TimescaleDB is a time-series SQL database providing fast analytics, scalability, with automated data management on a proven storage engine.
Sentry.io - From error tracking to performance monitoring, developers can see what actually matters, solve quicker, and learn continuously about their applications - from the frontend to the backend.
VictoriaMetrics - Cost-effective database for huge amounts of time series data
RabbitMQ - RabbitMQ is an open source message broker software.