Rulers Guides.js
Creates Photoshop-like guides and rulers interface on a web page
Bluebird
Bluebird is a full featured promise library with unmatched performance.
Nightwatch
UI automated testing framework based on node.js and selenium webdriver
Jasmine Ajax
jasmine-ajax - A library for faking Ajax responses in your Jasmine suite.
Js Cover
JSCover is a tool that measures code coverage for JavaScript programs.
Yarn
Fast, reliable, and secure dependency management.
Jasmine
DOM-less simple JavaScript testing framework
Gulp
The streaming build system
Angular Debaser
Just a better way to test AngularJS apps.
Phantom Css
Visual/CSS regression testing with PhantomJS
JSHint
JSHint is a community-driven tool to detect errors in JavaScript code and enforce your team's coding conventions.
Trace Kit
Attempts to create stack traces for unhandled JavaScript exceptions in all major browsers.
Pioneer
Integration Testing
Csscritic
A lightweight framework for regression testing of Cascading Style Sheets
Nock
HTTP mocking and expectations library
Protractor
E2E test framework for Angular apps
Stacktrace.js
Framework-agnostic, micro-library for getting stack traces in all web browsers