Nagios XI Pricing (2026): Node Tiers and Renewal Costs

Short answer: Nagios XI uses a perpetual, node-based license. Its public starting price is $2,595 for 100 Standard nodes or $4,690 for 100 Enterprise nodes. Services on a licensed node are unlimited, so adding checks to the same host is not another node fee. A free license is limited to seven nodes or 100 services, whichever comes first. Maintenance & Support is included in the first year and needs renewal for updates and vendor support. Nagios XI pricing, renewal page

Nagios XI public license prices

These are Nagios's published license amounts, checked September 26, 2026. They are perpetual-license starting prices by node count, not annual subscription rates. Hosting, staff operation, renewal and any contract adjustment are separate.

The Enterprise edition adds reporting and bulk tools such as scheduled reports, capacity planning, business-process views and audit logging, according to the vendor's edition description. Confirm which of those is needed before choosing the higher-priced edition. Sitewide licensing covers multiple unlimited-node instances, but its amount is quote-only.

What counts as a node?

Nagios describes a node as a unique IP address or fully qualified domain name monitored, such as a server, router, switch, firewall, workstation or appliance. Services are the checks on that host. Monitoring 100 hosts with ten services each is still a 100-node licensed setup under the public description; the cost is not 1,000 service units. But the free tier also has a 100-service cap, so it can be reached before seven nodes. Nagios XI pricing, free plan

Inventory hosts with aliases and duplicate IPs carefully, then ask the vendor how unusual virtual, ephemeral or multi-interface equipment is counted. A license count should follow the actual monitored configuration, not the number of employees or only physical boxes.

First-year price versus renewal

Nagios's renewal page says a new license includes one year of Maintenance & Support, and renewal maintains access to updates, technical support and resources. The current maintenance page publishes plan amounts effective January 1, 2026 and describes service-level choices. Request a renewal quote for the exact node count and support level rather than assuming one universal renewal percentage.

Some Nagios Premium Features are tied to active Maintenance & Support. The edition comparison and maintenance page do not state all post-expiry behavior in identical terms. Both indicate that ongoing access to updates and support depends on renewal; one page distinguishes whether already-configured Premium Features keep operating while new configuration is restricted. Ask Nagios for the signed entitlement terms for your version and configuration.

Watch out: The software license is perpetual, but self-hosting also has infrastructure, backup, upgrade and admin costs. If the network operation depends on rapid vendor help, budget Maintenance & Support as a recurring line even though the core license is not a subscription.

Budget examples and questions

At the list rate, a 150-node Standard deployment would need at least the 200-node band, listed at $4,395 for the initial license. The equivalent Enterprise band is $6,490. This is tier selection from the public table, not a quote or a five-year cost. A 900-node estate would use the 1,000-node band unless a different sales arrangement is agreed. Nagios XI pricing

Ask for a quote showing node count, edition, any Sitewide or distributed requirement, first-year included support, annual renewal, and what happens to Premium Features if maintenance lapses. Include hosting, backup, integrations and upgrade labor in an internal total. Compare those costs against other tools in the network monitoring category and retain the decision in a software shortlist.

Bottom line

Nagios XI's initial license cost is clear by node band, and additional services on a licensed node do not create more node fees. The buyer's real comparison also needs edition features, annual maintenance, self-hosted operations and any multi-site agreement. Get those terms together in one quote.