Hotel
Start apps from your browser and get local domains without editing /etc/hosts http://i.imgur.com/DrLjbIi.gif
Headstart
An automated front-end setup
Should.js
BDD style assertions for node.js -- test framework agnostic
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