Program to detect bandwidth chewing?

[Telkomisaloser]

Anyone know of a free program to detect a bandwidth chewer? I need one right now a program is chewing up 5 MBs a hour so anyone know of a decent program?

 

[CodeMaster]

NetLimiter
http://www.netlimiter.com/

Also allows to limit bandwidth per program/process.

 

[The_Unbeliever]

Best is a dedicated firewall so all outgoing traffic can be measured at the point of exit/entry

 

[killadoob]

du super controller