Polly.JS : Polly.JS is a standalone, framework-agnostic JavaScript library that enables recording, replaying, and stubbing HTTP interactions.
Polly taps into nat...
tracing-framework : Rich tools for instrumenting, analyzing, and visualizing web apps.
SlimerJS : A scriptable browser for Web developers
BackstopJS : Breaking CSS is easy. Checking every responsive page element is hard. That’s why there's BackstopJS.
RequireJS : RequireJS is a JavaScript file and module loader. It is optimized for in-browser use, but it can be used in other JavaScript environments, like Rhino ...
Zombie.js is a lightweight framework for testing client-side JavaScript code in a simulated environment. No browser required.