XSS Filter Evasion Cheat Sheet - OWASP : This article is focused on providing application security testing professionals with a guide to assist in Cross Site Scripting testing.
HTML Purifier : HTML Purifier is a standards-compliant HTML filter library written in PHP. HTML Purifier will not only remove all malicious code (better known as XSS)...
XSS game : Warning: You are entering the XSS game area.
SpiderFoot : With almost 200 modules and growing, SpiderFoot provides an easy-to-use interface that enables you to automatically collect Open Source Intelligence (...
The following rules are intended to prevent all XSS in your application. While these rules do not allow absolute freedom in putting untrusted data into an HTML document, they should cover the vast majority of common use cases.