Grafana

Grafana lets you query, visualize, alert on and understand your metrics no matter where they are stored. Dashboards are made to be created, explored and shared with a team, which is how a data-driven habit spreads beyond the person who built the first panel.

Panels come from plugins, so the ways to show metrics and logs keep growing, and template variables turn a dashboard into a reusable one with dropdowns at the top. A data source is chosen per query, so a single graph can mix sources, custom ones included.

The daily surface is compact.

• Visualizations: fast client-side graphs with many options, extended by panel plugins.
• Dynamic dashboards: template variables that make one dashboard serve many teams or environments.
• Explore metrics: ad-hoc queries and drilldown, with split view comparing time ranges, queries and sources side by side.
• Explore logs: switch from metrics to logs with label filters preserved, then search or stream them live.
• Alerting: define rules visually and let Grafana evaluate them continuously, notifying Slack, PagerDuty, VictorOps or OpsGenie.

Installation guides cover the usual platforms, and a public play instance lets you try it before installing anything. Grafana is distributed under AGPL-3.0-only, with Apache-2.0 exceptions documented separately, and the contributor path includes a developer guide, a style guide and beginner-friendly issues.