Kali Linux : Penetration Testing Linux OS containing tools to test the security of system or a network.
The Big List of Naughty Strings : The Big List of Naughty Strings is a list of strings which have a high probability of causing issues when used as user-input data.
WebScarab : WebScarab is a framework for analysing applications that communicate using the HTTP and HTTPS protocols.
tracing-framework : Rich tools for instrumenting, analyzing, and visualizing web apps.
boomerang : boomerang is a piece of javascript that you add to your web pages, where it measures the performance of your website from your end user's point of vie...
A passive reconnaissance tool inside the DOM (experimental)