yepnope.js : A Conditional Loader For Your Polyfills!
Polly.JS : Polly.JS is a standalone, framework-agnostic JavaScript library that enables recording, replaying, and stubbing HTTP interactions.
Polly taps into nat...
Jest : Jest is used by Facebook to test all JavaScript code including React applications. Complete and easy to set-up JavaScript testing solution. Works out ...
jscs is a code style checker. jscs can check cases, which are not implemented in jshint, but it does not duplicate jshint functionality, so you should use jscs and jshint together.