Vulnerability Patterns Detector for C# and VB.NET
Human verification & attack prevention for website security
Powerfull XSS Scanning and Parameter analysis tool&gem
Passively audits the security posture on current page for your browser
Static Analysis Tool for Detecting Security Vulnerabilities in Python
Free Static Code Analysis Tool for PHP Applications
Tool to detect and correct vulnerabilities in PHP web applications
A java based tool that can block cross site scripting attacks
A XSS bruteforcing tool