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Is there an easy-to-use and hopefully free software that can show the user which of the running processes are connecting to the internet and how much of the bandwidth it's using?

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closed as not constructive by Scott Chamberlain, Renan, Canadian Luke, Mokubai, 8088 Mar 12 '13 at 21:25

As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance.If this question can be reworded to fit the rules in the help center, please edit the question.

Without knowing what OS you are using that is a impossible question to answer. Also software recommendations are not on topic as they can easily become out of date and no longer relevant. Also did you attempt to Google "Bandwidth monitor" their appears to be some promising results. – Scott Chamberlain Mar 12 '13 at 20:07
up vote 4 down vote accepted

If you are using Windows then follow these steps:

  1. click Start Menu and in "Search programs and files" text box enter "resource" and press ENTER
  2. Resource Monitor will start, click "Network" tab

There you have listed all processes that are using your bandwidth.

Hope this helps you.

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On GNU/Linux:

sudo lsof -i

lists all the open connections/ports (no bandwidth).

On MS Windows, try Mike Russinovich's Process Explorer.

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