I want a software(app) to monitor specifically which app is using my internet connection(also at what rate). I would be better if it has an option to close the unnecessary app.
Software needed
*www.sysinternals.com/ntw2k/source/tcpview.shtml
Hope it helps.
Hope it helps.
Microsoft Network Monitor
Download: Microsoft Network Monitor 3.4 - Microsoft Download Center - Download Details
Download: Microsoft Network Monitor 3.4 - Microsoft Download Center - Download Details
The link is dead
N
Try Freemeter, it is a small utility that works in the background.
FreeMeter - download
FreeMeter - download
use Net Limiter 3
freemetre is the best....
TCPView for Windows
for paid one try DU Meter (its the best in paid softwares)
Networx is the one to get for a free utility 
Try Redeyes host monitor . Freeware works fine for me