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Domotz vs ntopng: catalog facts
Domotz	ntopng
Paid Paid service with a 14-day free trial that needs no credit card.	Freemium Licensed editions are sold by ntop, listed as models on the product page.
Web	Windows, macOS, Linux, Self-hosted
Layer-2 device identification across monitored sites Remote troubleshooting from one platform	Application detection powered by nDPI Real-time and historical traffic in a web interface
Paid service with no free tier mentioned Cloud-managed, so monitoring data goes through the vendor	Some features need a paid licence Needs a mirror port, TAP or flow exporter to see network traffic
Hosted service	Downloadable app, Self-hosted
Closed source	Closed source
License not stated	License not stated
Account needed	Not stated if an account is needed
Not stated if it works offline	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.