: User reviews on Software Advice frequently describe the setup as a "headache" that requires deep Linux/UNIX knowledge.
The Standard Edition includes the core GUI, configuration wizards, and reporting capabilities. : $2,595 200-Node License : $4,395 500-Node License : $8,295 1000-Node License : $14,995
Nagios XI is licensed via an annual subscription model based on the number of nodes (servers, switches, workstations) monitored. nagios license cost
: Reviewers on G2 have noted frustration with shifting pricing structures, such as moving from unlimited hosts to node-based limits, which can lead to "rip-off" feelings for long-term users.
: Up to $22,995 or more for specialized tiers Enterprise Edition Upgrade : User reviews on Software Advice frequently describe
Nagios offers a split pricing model: a free, community-driven version () and a commercial, feature-rich enterprise edition ( Nagios XI ). License Costs (2026 Estimates)
Based on my experience, I believe Nagios is a solid investment for organizations that need a reliable and feature-rich monitoring tool. While the license cost may seem steep, especially for larger environments, Nagios provides a high level of customization and scalability. : Reviewers on G2 have noted frustration with
Note: Pricing scales upward as you add more nodes (instances) to your monitoring environment.
For 2026, Nagios XI pricing follows a "perpetual" model, where you pay an upfront fee for the license and then an optional annual fee for maintenance and support. Standard Edition Pricing