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NetAlertX vs Domotz: catalog facts
NetAlertX	Domotz
Free Free to run on your own hardware.	Paid Paid service with a 14-day free trial that needs no credit card.
Self-hosted	Web
Continuous discovery of devices on the network Alerts when devices appear or disappear	Layer-2 device identification across monitored sites Remote troubleshooting from one platform
Needs a server or always-on machine to run Setup takes more effort than a one-off scan	Paid service with no free tier mentioned Cloud-managed, so monitoring data goes through the vendor
Self-hosted	Hosted service
Closed source	Closed source
License not stated	License not stated
No account needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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