Nagios
nagios.org ↗Open sourceSelf-hostable
Computer-software application that monitors systems, networks and infrastructure.
CategoryObservability & Monitoring
PricingFree, open source+ paid cloud / support
Self-hostableYes
RepositoryNagiosEnterprises/nagioscore
LicenseGPL-2.0
LanguageC
Last activityAug 2026Active
Repository
From GitHub · updated Oct 4
Stars2k
Forks482
Open issues209
Last pushAug 2026
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