The top 20 penetration testing tools are as follows: 1. Metasploit 2. Wireshark 3. Nmap 4. Burp Suite 5. John the Ripper 6. Aircrack-ng 7. Nessus 8. SQLMap 9. Hydra 10. Nikto 11. Acunetix 12. BloodHound 13. OpenVAS 14. Responder 15. Hashcat 16. W3af 17. OpenSCAP 18. Astra Security 19. WPScan 20. Medusa These tools are used by security professionals and ethical hackers to identify vulnerabilities in computer systems, networks, and applications. They help organizations improve their cybersecurity posture by addressing potential weaknesses before they can be exploited by malicious actors.