Openllmetry

The Prometheus monitoring system and time series database.

SigNoz is an open-source, OpenTelemetry-native observability platform for your team and their AI agents.

Scalable datastore for metrics, events, and real-time analytics

Agent for collecting, processing, aggregating, and writing metrics, logs, and other arbitrary data.

VictoriaMetrics: fast, cost-effective monitoring solution and time series database

Highly available Prometheus setup with long term storage capabilities. A CNCF Incubating project.