Data (internet) usage by apps on Android phone

[kc0018907]

Hi, i want to know which application is using my data services 3G/GPRS/EDGE etc. i have facebook, twitter etc installed on my device. When i am connected to Edge/GPRS, i want to know which tool is connecting to internet (data services) and downloading data.

Is there any app which can provide this information?

regards
kc0018907