Linux operating systems have tons of open source network monitoring tools on the web. Say, you can use iftop command to check bandwidth usage, netstat command to see reports on interface statistics or top command to watch running process on your system. But if you are really looking for something that can give you a real time statistics of your network bandwidth of per process usage, then NetHogs is the only utility you should look for.
17, Ubuntu 15.04/14.10 and Linux Mint 17/16
Mar 11, 13