Nagios Core vs Paessler PRTG Network Monitor
Nagios Core
nagios.org
Paessler PRTG Network Monitor
paessler.comSide by side
| Figure | Nagios Core | Paessler PRTG Network Monitor |
|---|---|---|
| Price from | Free | $16.67/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | — | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 6 |
| Spec score · Network Monitoring - Midmarket Software | 7.7 (#17) | 8.2 (#9) |
| Spec score · Server Monitoring | 7.7 (#26) | 8.3 (#13) |
| Integrations | The features page names Grafana, InfluxDB, Prometheus, PagerDuty, Slack, and ServiceNow among its integration options. | PRTG can send notifications to Slack and Microsoft Teams through webhooks; Paessler also lists compatibility with tools including ServiceNow, Jira Service Management, PagerDuty, and OpsGenie. |
| Intended users | The maker describes Core as suited to IT professionals comfortable with command-line configuration who want control without licensing costs. | Paessler describes PRTG Network Monitor as best suited to small and medium IT infrastructures, with features also for OT and IoT environments. |
| Purpose | Nagios Core monitors IT infrastructure including servers, network devices, websites, applications, services, and custom metrics. | PRTG Network Monitor monitors systems, devices, network traffic, applications, and other infrastructure metrics from an on-premises installation. |
Plans
Paessler PRTG Network Monitor
- Freeware EditionFree
- PRTG 500$200 a year
- PRTG 1000$358 a year
- PRTG 2500$742 a year
- PRTG 5000$1,300 a year
- PRTG 10000$1,642 a year
In their own words
Nagios Core
Nagios Core has no write-up on Specifiction yet; its figures are above.
Paessler PRTG Network Monitor
Paessler PRTG Network Monitor monitors systems, devices, network traffic, applications, and other infrastructure metrics from an on-premises installation. It runs on Windows servers and includes more than 250 preconfigured sensors, each measuring one or more aspects of a device. Monitoring tools include customizable alerts, scheduled reports, distributed monitoring, and dashboards with live status information. Paessler also lists adaptive AI-driven anomaly detection and smart sensor recommendations. PRTG provides an API for monitoring data and custom features, and can send webhook notifications to Slack and Microsoft Teams. Its free iOS and Android apps display monitoring data and send push notifications, but do not support cluster setups. The free plan covers up to 100 sensors; paid plans start at $200 per month paid annually. Each server accepts one license key, so license sizes cannot be combined on a server.