Kali Linux 2021 it contains a vast array of hacker tools and utilities (password attacks, sniffing and spoofing, reverse engineering). Hacking foreign WiFi/WLAN (wireless attacks) and more. Kali is designed for digital forensics and penetration testing.
If you would like to check out this latest and greatest Kali release, you can find download links for ISOs and Torrents, further from "Previous Versions" section available below you can download other versions of the program specially light, 32-bit and 64-bit version.