Grafana

Grafana is an open-source platform for monitoring and observability. Torkel Ödegaard created it in late 2013, originally as a fork of Kibana focused on time-series metrics visualization. Grafana Labs now develops it alongside a broader observability stack. Grafana connects to over 100 data sources — including Prometheus, PostgreSQL, Elasticsearch, CloudWatch, and InfluxDB — and presents their data in interactive dashboards.

The current release is Grafana 12. The platform handles all three observability signals: metrics (with Prometheus or Mimir), logs (with Loki), and traces (with Tempo). Dashboards are built from panels that support graphs, tables, heatmaps, and geo maps. A built-in alerting engine evaluates rules against any connected data source and routes notifications to Slack, email, PagerDuty, and other channels.

The official documentation covers installation, data source setup, and dashboard design. The source code is on GitHub under the AGPL-3.0 license.