WikkaWiki : WikkaWiki is a flexible, standards-compliant and lightweight wiki engine written in PHP, which uses MySQL to store pages.
DokuWiki : DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn't require a database.
DVWA - Damn Vulnerable Web Application : Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is damn vulnerable. Its main goals are to be an aid for security professionals to t...
