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vnStat vs IPTraf-ng: catalog facts
vnStat	IPTraf-ng
Free Free and open source under the GPL.	Free Free and open source.
Linux, Command line	Linux, Command line
Very light, no packet sniffing Statistics persist across reboots	Live traffic view in the terminal Works over SSH on headless servers
Linux and BSD only Console output by default; graphs need the separate image tool	Linux only Text interface with no graphical charts
Downloadable app	Downloadable app
Open source	Open source
License: GPL	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

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