Fast Check
Property based testing framework for JavaScript (like QuickCheck) written in TypeScript
Faker.js
generate massive amounts of fake data in Node.js and the browser
6to5
Turn ES6 code into readable vanilla ES5 with source maps
Gulp
The streaming build system
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
Headstart
An automated front-end setup
Chai
BDD / TDD assertion framework for node.js and the browser that can be paired with any testing framework.
Wire
A light, fast, flexible Javascript IOC container
Stencil
A Web Component compiler for building fast, reusable UI components and Progressive Web Apps 💎 Built by the Ionic Framework team
Monitor.io
remote monitoring and debugging for socket.io
Platform
Reactive libraries for Angular
Csscritic
A lightweight framework for regression testing of Cascading Style Sheets
Quixote
CSS unit testing
Apitizer
API mocking for client JavaScript applications
Thrill
Runs tests in many browsers.
Browser Sync
Keep multiple browsers & devices in sync when building websites. http://browsersync.io