nmap

    used for port scanning

gobuster

    used for directory brute forcing

dirbuster

    used for directory brute forcing

metasploit

    used for exploiting vairous services

hydra

    used for password cracking

john_the-Ripper

    used for password cracking

linPEAS

    for autoamting, dectecting all the possibilities of privilage esclation (Linux) 

winPEAS

    for autoamting, dectecting all the possibilities of privilage esclation (Windows) 

enum4linux

    Enum4linux is a tool for enumerating information from windows/linux and Samba systems