PHP_CodeSniffer : PHP_CodeSniffer tokenises PHP, JavaScript and CSS files and detects violations of a defined set of coding standards.
OverTheWire: Wargames : The wargames offered by the OverTheWire community can help you to learn and practice security concepts in the form of fun-filled games.
Nikto2 : Nikto is an Open Source (GPL) web server scanner which performs comprehensive tests against web servers for multiple items, including over 6500 potent...
WebScarab : WebScarab is a framework for analysing applications that communicate using the HTTP and HTTPS protocols.