Tenable SecurityCenter VS Metasploit

Qualys - Qualys helps your business automate the full spectrum of auditing, compliance and protection of your IT systems and web applications.

Rapid7 - Find security issues, verify vulnerability mitigations & manage security assessments with Metasploit. Get the world's best penetration testing software now. DownloadPen testing software to act like an attacker.

Saint Security Suite - Vulnerability Assessments As a vulnerability assessment solution, SAINT’s security research and development efforts focus on investigation, triage, prioritization and coverage of vulnerabilities of the highest severity and importance to our customer…

Nessus - Nessus Professional is a security platform designed for businesses who want to protect the security of themselves, their clients, and their customers.

Splunk - Splunk's operational intelligence platform helps unearth intelligent insights from machine data.

Exploit Pack - Exploit Pack is an open source project security that will help you adapt exploit codes on-the-fly.