1. https://google-gruyere.appspot.com/ - Web Application Exploits and Defenses
2. http://prompt.ml/ - prompt(1) to win
3. https://html5sec.org/ - HTML5 Security Cheatsheet
4. https://cure53.de/ - Cure53
5. http://html5security.org/ - HTML5 Security Resources Repository
6. https://code.google.com/p/domxsswiki/ - DOM XSS Test Cases Wiki Cheatsheet Project