Nikto2 : Nikto is an Open Source (GPL) web server scanner which performs comprehensive tests against web servers for multiple items, including over 6500 potent...
Skipfish : Skipfish is an active web application security reconnaissance tool. It prepares an interactive sitemap for the targeted site by carrying out a recursi...
OpenSCAP : The OpenSCAP ecosystem provides multiple tools to assist administrators and auditors with assessment, measurement, and enforcement of security baselin...
A proposed standard which allows websites to define security policies.