Akvorado is a good flow collector and visualiser, and best of all it’s open-source and free.

https://github.com/akvorado/akvorado

Regards,
Christopher Hawker

Get Outlook for iOS

From: NANOG <nanog-bounces+chris=thesysadmin.au@nanog.org> on behalf of KARIM MEKKAOUI <amekkaoui@mektel.ca>
Sent: Friday, 28 February 2025 10:40:38 am
To: nanog@nanog.org <nanog@nanog.org>
Subject: Traffic Flow Analyzer
 
Hi Nanog Community
 
We’re looking for a (open source, free, cost effective) tool that is able to analyze traffic flow coming from a couple of router interfaces and display capacity utilisation per IP, top talkers, etc.
 
Thank you in advance for your help
 
KARIM