Yale is a lightweight tool that shows the bandwidth usage of all network adapters.
The display window shows the information separated into up and downlinks, CPU usage, and disk transfer rate. You can then click on the network adapter entries and expand them to show you the bandwidth for every used protocol.
Yale allows you to place a 'port-numbers.txt' file into the same directory as 'Yale.exe' to see specific ports for analysis.
Simple Port Forwarding works with webpages and not directly with your router making it a safe program to use. Supports 52 Languages and 2600+ routers. Portable version also available.