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Nagios is a veteran IT infrastructure monitoring system for servers, networks, applications, and services with alerting and reporting capabilities.

Pricing

$1,995-3,495 one-time

Founded

1999

Team size

51-200 employees

Headquarters

Saint Paul, Minnesota

Product Preview

Nagios preview

Preview from nagios.org

At a glance

Pricing model

Free

Try before you buy

Integrates with

PagerDutySlackServiceNowGrafanaInfluxDB+5

About Nagios

Nagios has been a cornerstone of IT monitoring since 1999. Nagios Core is the open-source engine that monitors hosts, services, and network devices with configurable alerting and escalation procedures.

Nagios XI is the commercial version providing a web interface, configuration wizards, capacity planning, and advanced reporting. It monitors availability and performance across the entire IT infrastructure.

The platform uses an extensive plugin architecture with thousands of community and official plugins for monitoring everything from CPU usage to database queries to cloud services.

While newer tools have emerged, Nagios remains widely deployed in enterprise environments due to its proven reliability, extensive documentation, and administrator familiarity.

Buyer Fit & Positioning

Procurement & Fit

Structured facts from the vendor to help your security, finance, and procurement reviews move faster.

Trust

Security & compliance

The vendor hasn’t added security or compliance details yet.

Pricing

Commercial model

Pricing model: Free

Free trial: No

Free plan: Yes

Contract minimum: Not specified

Procurement

Purchasing & legal

The vendor hasn’t added purchasing & legal details yet.

Fit

Best-fit company size

Company-size fit has not been specified yet.

Implementation & Procurement

Commercial Fit & Ecosystem

Proof, Outcomes & Momentum

Alternatives, Migration & Buyer Objections