Nagios vs Netdata
Side-by-side from the Top 11 ranking of The 11 Best IT Infrastructure Monitoring Software Tools (2026). Last verified June 19, 2026.
The short answer
Nagios ranks higher on Top 11 (#10 vs #11) for IT teams monitoring server uptime, network health, and application performance. Monitors anything thanks to a huge library of community plugins.
At a glance
| Nagios | Netdata | |
|---|---|---|
| Top 11 rank | #10 / The 11 Best IT Infrastructure Monitoring Software Tools (2026) | #11 / The 11 Best IT Infrastructure Monitoring Software Tools (2026) |
| Score (out of 9.4) | 7.3 | 7.2 |
| Best for | Extensible open-source engine | Real-time, high-granularity monitoring |
| Pricing | $ (Free, paid edition) | $ (Free, paid cloud) |
| HQ | Saint Paul, USA | San Francisco, USA |
| Founded | 1999 | 2014 |
Nagios
Monitors anything thanks to a huge library of community plugins.
www.nagios.com/See full entry in The 11 Best IT Infrastructure Monitoring Software Tools (2026)
Netdata
Unparalleled real-time visibility with per-second metrics.
www.netdata.cloud/See full entry in The 11 Best IT Infrastructure Monitoring Software Tools (2026)
Methodology and scoring weights live at /methodology. No vendor pays for placement — see about.