Traceway

The Prometheus monitoring system and time series database.

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

Nightingale is to monitoring and alerting what Grafana is to visualization.

OpenTelemetry Collector

Real-time monitoring of IT components and services, such as networks, servers, VMs, applications and the cloud.

Open source APM: OpenTelemetry traces, metrics, and logs