w3af - w3af is a Web Application Attack and Audit Framework
Qualys - Qualys helps your business automate the full spectrum of auditing, compliance and protection of your IT systems and web applications.
Nikto - Nikto is an Open Source (GPL) web server scanner which performs comprehensive tests against web...
Nessus - Nessus Professional is a security platform designed for businesses who want to protect the security of themselves, their clients, and their customers.
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.
Burp Suite - Burp Suite is an integrated platform for performing security testing of web applications.