#3540
BWMeter is a tiny but powerful broadband/traffic monitor and controller based on WinpkFilter network drivers. It can perform real-time measure and control to any Internet/Network traffic through your computer. Meanwhile, it visually shows them in the way of chart.

#2861
Without any doubt, Wireshark (formerly called Ethereal) is currently the world's most famous, foremost free and open source network packets capture & analysis tool. Its appearance puts an end to the future of all similar business software.