regex101 : Free PCRE-based regular expression debugger with real time explanation, error detection and highlighting.
Firebug Lite : A JavaScript file you can insert into your pages to simulate the Firebug console in browsers that are not named Firefox.
Sonar : Sonar is a platform for debugging mobile apps on iOS and Android. Visualize, inspect, and control your apps from a simple desktop interface. Use Sonar...
awesome-selfhosted : This is a list of Free Software network services and web applications which can be hosted locally. Selfhosting is the process of locally hosting and m...
XSS Filter Evasion Cheat Sheet - OWASP : This article is focused on providing application security testing professionals with a guide to assist in Cross Site Scripting testing.
