Surely more than once you have noticed that your computer was using a lot of bandwidth, but you have not known with which application you could have an active monitoring that would allow you which app was eating your connection.
Rubbernet looks at what each application on your Mac sends and what it receives, putting the secrets aside and you can see what has eaten the limit of your 3G connection, to give a common example.
The application has a cost of $ 29,99, but we are possibly talking about the best designed and most complete in its field. Or at least the ones I have been able to try.
Link | rubbernet