Program to check what programs are using internet?

As title says, can someone link me to a program where I can check which programs are using the internet and how much bandwidth is being used?

Netlimiter http://www.netlimiter.com/scrshots.php

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Originally Posted by rossco

Netlimiter http://www.netlimiter.com/scrshots.php

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Definitely, Netlimiter is your best option.

yeah i used that one, it was good.