Bower
A package manager for the web, created at Twitter
Protractor
E2E test framework for Angular apps
Headstart
An automated front-end setup
Browser Sync
Keep multiple browsers & devices in sync when building websites. http://browsersync.io
Broccoli
Browser compilation library – a build tool for applications that run in the browser
Cypress
Fast, easy and reliable testing for anything that runs in a browser.
Nock
HTTP mocking and expectations library
Shipit
Universal automation and deployment tool written in JavaScript.
Gremlins.js
Monkey testing library for web apps and Node.js
Faker.js
generate massive amounts of fake data in Node.js and the browser