Protractor
E2E test framework for Angular apps
Jquery Mockjax
The jQuery Mockjax Plugin provides a simple and extremely flexible interface for mocking or simulating ajax requests and responses
Gulp
The streaming build system
Casper JS
Navigation scripting & testing utility for PhantomJS and SlimerJS
Broccoli
Browser compilation library – a build tool for applications that run in the browser
Recoil
Recoil is an experimental state management library for React apps. It provides several capabilities that are difficult to achieve with React alone, while being compatible with the newest features of React.
Phantom Css
Visual/CSS regression testing with PhantomJS
Bower
A package manager for the web, created at Twitter
Nock
HTTP mocking and expectations library
Blanket
blanket.js is a simple code coverage library for javascript. Designed to be easy to install and use, for both browser and nodejs.
Should.js
BDD style assertions for node.js -- test framework agnostic
JSHint
JSHint is a community-driven tool to detect errors in JavaScript code and enforce your team's coding conventions.
Quixote
CSS unit testing
Yarn
Fast, reliable, and secure dependency management.
Galen
Layout and functional testing framework for websites
Monitor.io
remote monitoring and debugging for socket.io
Logerr
Playing with console errors, experimental project.