SOFTWARE LICENSE GUIDE
Nagios Core
Nagios Core is an open-source IT infrastructure monitoring solution designed to monitor systems, networks, and infrastructure. It alerts administrators to system health issues to prevent service disruptions.
What it does
Monitors network devices, server metrics, and applications while delivering alerts and event handling capabilities.
Who it may suit
System administrators and IT teams needing an open-source engine for enterprise infrastructure monitoring.
Free tier and license
Completely free and open-source software under the GNU General Public License Version 2.
Limitations to check
Advanced web interfaces or commercial management features require Nagios XI or third-party add-ons; check official documentation for setup requirements.
Licensing notes
Distributed under the GNU General Public License Version 2 (GPLv2).
Verification details
Last licensing verification recorded: Not recorded.
Directory record last updated: 2026-10-18. These are separate dates: a record update does not necessarily mean the publisher's terms changed.
AI-assisted summaries may be incomplete or outdated. Confirm licensing, pricing, and commercial-use rights in the official sources before making a business decision.
Frequently asked questions
Is Nagios Core free for commercial use?
Yes, Nagios Core is open-source software licensed under GPLv2 and can be used without licensing fees.
How does Nagios Core notify administrators of issues?
It checks host and service states using plugins and triggers alerts when abnormal states or outages are detected.
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