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LibreNMS vs Naemon: catalog facts
LibreNMS	Naemon
Free Free and open source. Hosting, hardware and any external services are separate.	Free Free community project.
Self-hosted	Linux, Self-hosted
Collects device information and performance data Provides alerting and historical graphs	Drop-in successor for Nagios users Bug fixes and performance work on the Nagios 4 core
Device visibility depends on supported protocols and credentials.	Configuration follows the older Nagios style Needs a server to run on
Self-hosted	Self-hosted
Open source	Open source
License: GPL-3.0	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.