
Enterprise IT infrastructure monitoring software providing visibility across servers, networks, applications, and logs.
Nagios offers licensed IT infrastructure monitoring solutions with over 25 years of industry presence, enabling proactive detection and resolution of issues across on-premises, cloud, and hybrid environments.
Last updated: Sep 10, 2026
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Monitor servers, networks, applications, and critical services across legacy, cloud, and hybrid environments with deep, full-stack visibility.
Licensing is based on node count with fixed terms, avoiding costs based on metrics, sensors, or data volume.
Combine Nagios XI with Network Analyzer, Log Server, and Fusion for unified monitoring of network traffic, logs, and infrastructure status.
Specialized toolkits provide visibility into security events, network traffic analysis, device state changes, and audit-ready evidence.
Enhanced alerting, reporting, and automation capabilities with configuration GUIs and over 70 configuration wizards.
Collect, query, filter, and alert on syslogs, Windows event logs, and application logs with high availability and redundancy options.
Analyze NetFlow, sFlow, and IPFIX data with packet-level inspection, threat detection, bandwidth monitoring, and device discovery.
Nagios Fusion aggregates multiple Nagios instances into a single dashboard for comprehensive infrastructure monitoring across locations.
| Plan | Price | Highlights |
|---|---|---|
| Nagios XI Free | Free | Manage and monitor up to 7 nodes or 100 services
|
| Nagios XI Standard | Starting at $2,595 | Manage 100 to 2000+ nodes
|
| Nagios XI Enterprise Add-on | Starting at $4,690 | Available as add-on to any XI license
|
| Nagios XI Sitewide | Contact Sales | Unlimited nodes
|
| Nagios Log Server | Starting at $5,195 | Clustered instances from single to 20+
|
| Nagios Network Analyzer | $4,995 | Network traffic and bandwidth monitoring
|
| Nagios Fusion | $995 | Centralized visibility across multiple Nagios instances
|
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