Angry IP Scanner is a monitor network traffic, driving extremely fast and simple.
The program is open source and multiplatform. Angry IP Scanner analyzes IP addresses and status of ports, among several other functions.
If you're a network administrator, you'll find that Angry IP Scanner is ideal for a thorough survey of computer communications. Its utility is also recognized by home users, and Angry IP Scanner is widely used in small and large companies, banks and government agencies.
One great advantage is that Angry IP Scanner is a free and portable, you do not need to install and use is so small you can carry on a USB memory device. You only need to copy the executable file in the folder you want, and open it.