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The Dude vs Naemon: catalog facts
The Dude	Naemon
Free Free to download from MikroTik.	Free Free community project.
Windows	Linux, Self-hosted
Automatic device discovery Draws network maps from discovered devices	Drop-in successor for Nagios users Bug fixes and performance work on the Nagios 4 core
Installer is Windows only Closely tied to the MikroTik ecosystem	Configuration follows the older Nagios style Needs a server to run on
Downloadable app	Self-hosted
Closed source	Open source
License not stated	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 October 1, 2026	Official website Full listing and sources Checked September 24, 2026

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