Nagios XI
Nagios XI: A broad self-hosted monitoring suite for teams that prefer classic operations workflows. Ranked #17 of 32 in Infrastructure Monitoring by our editors (7.8/10); pricing: Free plan · 30-day trial; best for self-hosted monitoring with classic operations workflows.
At a glance
- Editor score7.8 / 10
- PricingFree plan · 30-day trial
- Best forSelf-hosted monitoring with classic operations workflows
- Free planYes
- Paid from$2,595/unit one-time
- Included hosts100 hosts
- Facts checked23 Sep 2026
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
Our verdict on Nagios XI
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.
Your product? Our editors can test Nagios XI in depth and publish a review, labelled as paid · from $149/mo →
Nagios XI pricing
All 3 Nagios XI plans and prices →
Nagios XI fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $2,595/unit one-time |
| Included hosts | 100 hosts |
| VM monitoring | Yes |
| Service monitoring | Yes |
| Metrics retention | Not verified |
| Deployment model | Self-hosted |
| OS coverage | Linux and windows |
| Agentless monitoring | Yes |
| Free trial | 30 days · no card needed |
| Deployment | Self-hosted, Cloud |
| Platforms | Linux, Web |
| Compliance & security | 2FA, SSO/SAML |
| Support | Tickets, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 7 integrations: Nagios Core, Nagios Fusion, Nagios Network Analyzer, Nagios Log Server, NCPA, NRPE … |
| Pricing | Free plan · 30-day trial (source) |
| Website | nagios.com |
| Facts checked | 23 Sep 2026 |
Nagios XI integrations
Nagios XI lists 7 integrations on its own site.
- Nagios Core
- Nagios Fusion
- Nagios Network Analyzer
- Nagios Log Server
- NCPA
- NRPE
- NSClient++
Alternatives to Nagios XI
- ZabbixA broad monitoring platform with a free self-hosted edition and flexible deployment options.9.4
- CheckmkA broad hybrid-monitoring platform with free open-source coverage and paid automation tiers.9.3
- Datadog Infrastructure MonitoringBroad infrastructure observability for cloud-native teams, with host-based pricing.9.2
See all Nagios XI alternatives →
Also Ranked In
Nagios XI is ranked in 11 of our directories; the 6 strongest besides Infrastructure Monitoring.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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