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Naemon vs Domotz: catalog facts
Naemon	Domotz
Free Free community project.	Paid Paid service with a 14-day free trial that needs no credit card.
Linux, Self-hosted	Web
Drop-in successor for Nagios users Bug fixes and performance work on the Nagios 4 core	Layer-2 device identification across monitored sites Remote troubleshooting from one platform
Configuration follows the older Nagios style Needs a server to run on	Paid service with no free tier mentioned Cloud-managed, so monitoring data goes through the vendor
Self-hosted	Hosted service
Open source	Closed source
License not stated	License not stated
No account needed	Account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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