The article discusses 25 free hacking tools necessary for hacking professionals.Reconnaissance and scanning tools like Masscan, Sublist3r, Nmap, Recon-ng, and Sn1per are highlighted.These tools assist in network discovery, subdomain enumeration, and vulnerability detection.Exploitation frameworks like Metasploit, Hydra, and Sqlmap are crucial for exploiting vulnerabilities.Web penetration testing tools like Burp Suite, OWASP ZAP, and Gobuster aid in assessing online application security.Password cracking and authentication tools like Hashcat and John the Ripper help in breaking password hashes.OSINT tools such as Sherlock, SpiderFoot, and TheHarvester are used for open-source intelligence gathering.Post-exploitation and privilege escalation tools like PEASS-ng and PowerSploit provide capabilities for escalating privileges.Networking and MITM tools like Wireshark, CrackMapExec, and King Phisher are useful for network analysis and phishing simulations.Additional tools like Naabu, Subfinder, and BloodHound assist in port scanning, subdomain enumeration, and Active Directory mapping.Each tool serves a specific purpose in the hacking domain, contributing to various stages of reconnaissance, exploitation, and testing.