Here you can download the linux which is the best hacking software you can get.The steps to downloading linux are given below.
Download these if your computer is 32-Bit
Kali Linux 32-BitTorrent 32-BitDownload these if your computer is 64-Bit
Kali Linux 64-BitTorrent 64-BitNow chose the location where you want to download the files and download.
Now go to the location where you download the file and open it.You will need an empty disk.
Click on the disk where you want to get the installation.Move both the torrent and the linux file to that disk.Then just easily open it.