Traffic Flow analyzer in 2018?

Hey all.

What is the best free traffic flow analyzer in 2018? I have been looking around and can find many great solutions but they all requires you to pay for subscription.

I need to monitor all the devices connected to my LAN network to have an understanding what is “eating up” our network quota.

If there would be some nice package which i could install under Raspberry Pi - that would be just perfect.

Thank you

You might want to have a look at ntop, though you’ll need a linux box/vm for it.

You could also turn on IP accounting in RouterOS.

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