
It is the de facto (and often de jure) standard across many industries and educational institutions. It lets you see what’s happening on your network at a microscopic level. It is used for network troubleshooting, analysis, software and communications protocol development and many more.Wireshark is the world’s foremost network protocol analyzer.

Wireshark is a free and open-source packet analyzer. Nmap is available for Windows, Linux and Mac too.

To accomplish its goal, Nmap sends specially crafted packets to the target host and then analyzes the responses. Nmap ( Network Mapper) is a security scanner originally written by Gordon Lyon and it is used to discover hosts and services on a computer network, thus creating a “map” of the network. Acunetix is a web vulnerability scanner (WVS) that scans and finds out the flaws in a website that could prove fatal and this software is available for windows platform.
