Yeoman
Yeoman - a set of tools for automating development workflow
Gulp
The streaming build system
Pioneer
Integration Testing
Hotel
Start apps from your browser and get local domains without editing /etc/hosts http://i.imgur.com/DrLjbIi.gif
Type Script
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
Nightwatch
UI automated testing framework based on node.js and selenium webdriver
Testcafe
A Node.js tool to automate end-to-end web testing.
Jasmine
DOM-less simple JavaScript testing framework
6to5
Turn ES6 code into readable vanilla ES5 with source maps
Faker.js
generate massive amounts of fake data in Node.js and the browser