Yarn
Fast, reliable, and secure dependency management.
Angular Debaser
Just a better way to test AngularJS apps.
Nightwatch
UI automated testing framework based on node.js and selenium webdriver
Bower
A package manager for the web, created at Twitter
Trace Kit
Attempts to create stack traces for unhandled JavaScript exceptions in all major browsers.
Js Cover
JSCover is a tool that measures code coverage for JavaScript programs.
Nock
HTTP mocking and expectations library
Pioneer
Integration Testing
Phantom Css
Visual/CSS regression testing with PhantomJS
Fast Check
Property based testing framework for JavaScript (like QuickCheck) written in TypeScript
Jasmine
DOM-less simple JavaScript testing framework
Gulp
The streaming build system
Qunit
An easy-to-use JavaScript Unit Testing framework.
Stacktrace.js
Framework-agnostic, micro-library for getting stack traces in all web browsers
Csscritic
A lightweight framework for regression testing of Cascading Style Sheets
Prettydiff
Compare code instead of text.
Headstart
An automated front-end setup