Kali Linux : Penetration Testing Linux OS containing tools to test the security of system or a network.
Prototype : Easy Ajax and DOM manipulation for dynamic web applications
SlimerJS : A scriptable browser for Web developers
PhantomJS : PhantomJS is a headless WebKit with JavaScript API. It has fast and native support for various web standards: DOM handling, CSS selector, JSON, Canvas...
OpenVAS : OpenVAS is a full-featured vulnerability scanner. Its capabilities include unauthenticated testing, authenticated testing, various high level and low ...
A passive reconnaissance tool inside the DOM (experimental)