Penatration Testing
BackTrack (Now Kali Linux):
BackTrack
A retired Linux distribution focused on network security and penetration testing, replaced by Kali Linux.
Kali Linux:
Kali Linux
A Linux distribution that aggregates a vast collection of tools for penetration testing, digital forensics, and security auditing.
Metasploit Framework:
Metasploit
A powerful, open-source toolset for penetration testing, vulnerability assessment, and security exploitation.