Logz.io - Graphite

Graphite is an open-source application for monitoring (metrics) and alerts for storing time series data. Find Graphite tutorials and integration guides for monitoring here. It includes a daemon that passively listens for time series data called Carbon and data collected is stored in a library called Whisper. Its interface is known as Graphite Web.

2022 Gartner® Magic Quadrant for Application Performance Monitoring and Observability
Forrester Observability Snapshot.