Application bandwidth monitoring ?

[Platform]

Does anyone know of an app that will give a result such as

Safari: 250KB/s
iTunes: 2.5KB/s
etc

I'm using little Snitch to limit what app does what, but I can't tell what application is using how much and what app is using any at all.
MenuMeters shows me how much overall, but I want to know what app is pulling what.

Thanks

 

[SimonTheSoundMa]

ntop and syslog in terminal will help. Google for how to use.

 

[Platform]

ntop and syslog in terminal will help. Google for how to use.

Thanks for that, but does anyone know of any application

 

[superbovine]

Thanks for that, but does anyone know of any application

the stated programs above are applications.