How to Check Which Application or Software is Using Internet Connection by Britec
To see what applications are connected to the Internet or what applications are using Internet, you can use a small utility by Microsoft Sysinternals called TCPView. This is a small and handy utility, When you run the utility it will display all the applications which are connected to Internet.
https://technet.microsoft.com/en-us/sysinternals/bb897437.aspx
