Research any topic before you write.

Find related topics. | Discover entities. | See connections. | Build a topical map.

Nagios

Nagios (/ˈnɑːɡiːoʊs/) is an open-source network and infrastructure monitoring system. It monitors hosts, services, and network devices, sending alerts when components fail and again when they recover. Originally written by Ethan Galstad in 1999 as NetSaint, it was renamed Nagios in 2002 after a trademark dispute. The name is a recursive acronym: "Nagios…

History & Products

Use the mouse wheel or two fingers (on touchscreens) to zoom in and out of the map.

Research this topic

Explore the main themes, entities and connections around Nagios. Start with the topic map, then use the sections below for research and deeper semantic analysis.

Explore this topic

Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.

History

SourceForgeOpenNMSAgios
3 related topics

Nagios XI

RRDtoolMySQLCentOSRHEL
4 related topics

Architecture

CGI
1 related topics

Overview

NetworkRecursive acronymLinuxUnixGPLv2
9 related topics

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Developer
Nagios Enterprises
License
GPLv2
Operating system
Linux, Unix
Original author
Ethan Galstad
Release
March 14, 1999; 27 years ago (1999-03-14)
Repository
github.com/NagiosEnterprises/nagioscore

Topics to explore

Browse the full topic structure. Each item opens a new analysis centered on that subject.

Overview

History

Architecture

  • CGI Common Gateway Interface

Nagios XI

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

Map overview Semantic statistics

Nagios

Nodes22
Edges21
Triples52
Avg. degree1.91
Density0.090909
Components1

How this topic connects Entity context

See the strongest relationship patterns around the current topic before diving into the raw triples.

Nagios

Top relations

related to Nagios XI · 11
Nagios → CentOS, Highcharts, It, MySQL, Nagios Core, Nagios XI, NDOUtils, PHP-based, RHEL, RRDtool, The
related to history · 10
Nagios → Agios, Although, Galstad, Greek, In, March, NetSaint, OpenNMS, SourceForge, The
related to Plugin model · 10
Nagios → CRITICAL, Instead, Monitoring Plugins, Nagios Core, Nagios Exchange, OK, The, This, UNKNOWN, WARNING
related to Plugins controversy · 4
Nagios → Monitoring Plugins, Nagios Enterprises, On January, The
related to Web interface · 3
Nagios → CGI-based, Nagios Core, The
related to External links · 2
Nagios → Official, SourceForge
related to Icinga fork · 2
Nagios → Icinga, In May
Developer · 1
Nagios → Nagios Enterprises
License · 1
Nagios → GPLv2
Operating system · 1
Nagios → Linux, Unix

Important terminology Word statistics

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

monitoring plugins icinga galstad network interface core xi written name runs web system enterprises linux unix gplv2 configuration netsaint services

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
NagiosDeveloperNagios Enterprises1.00infobox
NagiosLicenseGPLv21.00infobox
NagiosOperating systemLinux, Unix1.00infobox
NagiosOriginal authorEthan Galstad1.00infobox
NagiosReleaseMarch 14, 1999; 27 years ago (1999-03-14)1.00infobox
NagiosRepositorygithub.com/NagiosEnterprises/nagioscore1.00infobox
NagiosStable release4.5.11 / January 15, 2026; 7 months ago (2026-01-15)1.00infobox
NagiosTypeNetwork monitoring1.00infobox
NagiosWebsitewww.nagios.org1.00infobox
NagiosWritten inC1.00infobox
Nagiosrelated to External linksOfficial0.60section
Nagiosrelated to External linksSourceForge0.60section

Related concept clusters Concept neighborhoods

These clusters group vocabulary that occurs around closely connected concepts in the source material.

    Connections between topic areas Semantic bridges

    Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.

    Min side: 3
    For writers, content strategists, SEOs, marketers and creators — from quick topic research to advanced semantic analysis.