One of the most downloaded hacking software, Cain and Abel can sniff and decrypt any network packets from a wifi network. It is free to download and easy to use and configure. You need no programming or networking knowledge before using this tool.
This tool is compatible with both Windows and Linux system and requires minimum hardware requirements. To download this tool just click the download button given below.
To Configure Cain and Abel, read this article
To hack wifi passwords using Cain and Abel, head over here
You can Download Cain and Abel from the below link for free of cost