Netdata

GPL-3.0 per-second monitoring agent with auto-discovery, alerts and ML anomaly detection

Observability / Observability · GPL-3.0+ agent; dashboard UI under NCUL1 · 81.1k

Reviewed 2026-10-21 · last push 2026-10-21 · repo checked 2026-10-21

What's Good

GPL-3.0+ agent (netdata/netdata), release v2.12.1 (2026-10-08), commit on 2026-10-21. ★~81k (~116 a week). Runs on Linux, macOS, FreeBSD, Windows and Kubernetes. Useful when you want useful charts and alerts for a box in minutes, without building Prometheus and Grafana dashboards first.

The Catch

Only the agent is GPL: the dashboard UI it ships is under Netdata's own NCUL1 license, free to use but not open source. Netdata Cloud is optional and has a free community tier, but the multi-node and team features (RBAC, centralized alerts) live there. If you need a fully open stack, pair the agent with Prometheus and Grafana instead of the bundled UI.

Verdict

The fastest way to see what a server is doing; know that the UI is not open source.

See also: Beszel, Prometheus, Grafana

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