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My home wireless network has gotten horribly slow and I'd like to figure out which of the various computers connected (and ideally what program on that machine) is eating up all of the bandwidth. Is there free software that I can use on Windows/OS X that can help me figure this out? I'm not particularly familiar with computer networks so any additional guides/tutorials are very much appreciated.

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migration rejected from stackoverflow.com Mar 26 at 0:01

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closed as off-topic by Ben N, DavidPostill, fixer1234, mdpc, random Mar 26 at 0:01

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions seeking product, service, or learning material recommendations are off-topic because they become outdated quickly and attract opinion-based answers. Instead, describe your situation and the specific problem you're trying to solve. Share your research. Here are a few suggestions on how to properly ask this type of question." – Ben N, DavidPostill, fixer1234, mdpc, random
If this question can be reworded to fit the rules in the help center, please edit the question.

I'd suggest using Wireshark : http://www.wireshark.org as one of the best freeware analysers I've used. Be aware than on a non-promiscuous mode network adapter you're only going to see traffic between the computer you've installed wireshark on and the devices that communicate with it or broadcast type traffic.

See here for some additional info: http://www.wireless-nets.com/resources/tutorials/sniff_packets_wireshark.html

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