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

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

Tsunami - A general purpose network security scanner with an extensible plugin system for detecting high severity vulnerabilities with high confidence

AlienVault USM (from AT&T Cybersecurity) - AlienVault USM Anywhere delivers powerful threat detection, incident response, and compliance management for cloud, on-premises, and hybrid environments.

OpenVAS - The Open Vulnerability Assessment System (OpenVAS) is a framework of several services and tools...

BreachLock - BreachLock is a versatile platform that provides scalable and smooth penetration testing services for vulnerabilities.