Nessus Alternatives for Linux

Metasploit is a powerful open-source penetration testing framework used by cybersecurity professionals to identify and exploit vulnerabilities in systems and applications. It provides a vast collection of exploits, payloads, and post-exploitation tools, facilitating comprehensive security assessments and ethical hacking operations.

Skipfish is a discontinued command-line web application security scanner known for its recursive crawling and heuristic detection capabilities. It's designed to quickly assess web applications for common vulnerabilities and security flaws.