hunt : Library to detect when DOM elements become visible and disappear on scroll.
yepnope.js : A Conditional Loader For Your Polyfills!
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.
JSHint : This is JSHint, a tool that helps to detect errors and potential problems in your JavaScript code.
A passive reconnaissance tool inside the DOM (experimental)