Nagios XI review
A broad self-hosted monitoring suite for teams that prefer classic operations workflows.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Nagios XI is a self-hosted infrastructure monitoring platform for IT teams responsible for servers, networks, applications, databases, cloud resources, virtual machines, and containers. It combines host and service checks with alerts, notifications, escalations, scheduled downtime, dashboards, performance graphs, reports, network maps, and configuration wizards. Monitoring can cover Linux, Windows, and Unix systems through agent-based and agentless methods including SNMP, WMI, and SSH. Its web, self-hosted, and API delivery model fits organizations that want direct control over deployment and monitoring workflows.
Pricing is structured around perpetual, node-based licensing. The Free plan supports up to seven nodes or 100 services, whichever comes first, and includes most Standard license features without support. Standard costs $2,595 one time for a 100-node license and adds infrastructure monitoring and graphing, an open API, enhanced alerting and reporting, a configuration GUI, and more than 70 configuration wizards. Enterprise costs $4,690 one time for a 100-node license and adds SLA reports, Business Process Intelligence, capacity planning, and scheduled reports. Sitewide supports multiple unlimited-node instances with Enterprise features and distributed deployment; pricing is available through sales.
Nagios XI is strongest when classic infrastructure operations are the priority. Its feature set spans capacity planning, historical trend reporting, REST automation, distributed architecture, SNMP trap management, and integrations with AWS, Microsoft Azure, Google Cloud Platform, Microsoft 365, VMware vSphere, Hyper-V, Kubernetes, Docker, OpenShift, Prometheus, Slack, and PagerDuty. Choose it for broad self-hosted coverage and configurable monitoring workflows. Teams seeking a free deployment beyond seven nodes or 100 services, included support, or a lower paid entry price should consider an alternative.
Nagios XI pros and cons
- Where it wins
- Monitors hosts, services, networks, clouds, VMs, and containers
- Includes dashboards, maps, alerting, reports, and configuration wizards
- Supports distributed monitoring, SNMP traps, REST API, and agentless checks
- Where it doesn't
- Free edition is limited to seven nodes or 100 services
- Free plan does not include support
- Paid licensing starts at a $2,595 one-time price
Nagios XI fact sheet, pricing and score →
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