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ntopng vs EtherApe: catalog facts
ntopng	EtherApe
Freemium Licensed editions are sold by ntop, listed as models on the product page.	Free Free open-source software.
Windows, macOS, Linux, Self-hosted	Linux
Application detection powered by nDPI Real-time and historical traffic in a web interface	Visual view of which hosts are talking and how much Colour-coded protocols
Some features need a paid licence Needs a mirror port, TAP or flow exporter to see network traffic	Unix only, with no Windows or macOS build listed An overview tool rather than a detailed packet inspector
Downloadable app, Self-hosted	Downloadable app
Closed source	Open source
License not stated	License not stated
Not stated if an account is needed	No 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.