Yarn
Fast, reliable, and secure dependency management.
Spa Eye
Backbone debugger for Firefox
Nightwatch
UI automated testing framework based on node.js and selenium webdriver
Jasmine
DOM-less simple JavaScript testing framework
JSHint
JSHint is a community-driven tool to detect errors in JavaScript code and enforce your team's coding conventions.
Pioneer
Integration Testing
Grunt
Grunt: The JavaScript Task Runner
Gulp
The streaming build system
Casper JS
Navigation scripting & testing utility for PhantomJS and SlimerJS
Angular Debaser
Just a better way to test AngularJS apps.
Jasmine Ajax
jasmine-ajax - A library for faking Ajax responses in your Jasmine suite.
Csscritic
A lightweight framework for regression testing of Cascading Style Sheets
Trace Kit
Attempts to create stack traces for unhandled JavaScript exceptions in all major browsers.
Type Script
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
Stacktrace.js
Framework-agnostic, micro-library for getting stack traces in all web browsers
Protractor
E2E test framework for Angular apps
Should.js
BDD style assertions for node.js -- test framework agnostic