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