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Nagios vs Nagios XI

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NagiosMonitoring & Observability
Nagios XIInfrastructure Monitoring Platforms
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Monitoring & Observability

Overview
Focus
Monitoring & Observability
Infrastructure Monitoring Platforms
Product
Nagios is a veteran IT infrastructure monitoring system for servers, networks, applications, and services with alerting and reporting capabilities.
Enterprise network monitoring platform built on Nagios Core providing comprehensive monitoring, alerting, and reporting for IT infrastructure.
Headquarters
Saint Paul, Minnesota
Glendale, Minnesota
Company size
51-200 employees
11-50 employees
Founded
1999
1999
Pricing details
Free options
Free plan
Free trial
Source updated
Oct 29, 2026
Oct 29, 2026

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Monitoring & Observability