Nagios Xi License <2025>

Users who do not require a commercial license can use – the original open-source monitoring engine. Nagios Core is free (GPL license) but lacks the web configuration GUI, native dashboards, reporting, and enterprise add-ons found in Nagios XI.

Custom node counts beyond 1000 are available via custom quote. nagios xi license

: A third instance reserved for failover. It must remain in a "non-operational" mode—meaning it does not actively monitor—unless the primary production server fails [19, 23]. Key License Features & Tiers Users who do not require a commercial license