Best Open Source Alternatives to Paessler PRTG

Netdata is an open-source real-time infrastructure monitor that tracks per-second server and container metrics locally with zero query latency.

vs Paessler PRTG: a free, open-source option you fully control, licensed GPL-3.0.

Grafana is an open-source observability platform replacing proprietary APM tools with decoupled, high-performance dashboards over any database.

vs Paessler PRTG: a free, open-source option you fully control, licensed AGPL-3.0.

Checkmk is an open-source infrastructure monitoring system replacing Datadog and PRTG with rule-based auto-discovery and on-premise data control.

vs Paessler PRTG: a free, open-source option you fully control, licensed GPL-2.0.

Icinga is an open-source monitoring platform that replaces Datadog and PRTG for infrastructure health checks using a compiled C++ engine and custom DSL.

vs Paessler PRTG: a free, open-source option you fully control, licensed GPL-3.0.

Nagios Core is an open-source infrastructure monitoring engine that replaces costly per-host tools with scriptable, self-hosted health and uptime checks.

vs Paessler PRTG: a free, open-source option you fully control, licensed GPL-2.0.