Nock
HTTP mocking and expectations library
Ag Grid
The best JavaScript Data Table for building Enterprise Applications. Supports React / Angular / Vue / Plain JavaScript.
Pioneer
Integration Testing
Cypress
Fast, easy and reliable testing for anything that runs in a browser.
Browser Sync
Keep multiple browsers & devices in sync when building websites. http://browsersync.io
Stencil
A Web Component compiler for building fast, reusable UI components and Progressive Web Apps 💎 Built by the Ionic Framework team
Nightwatch
UI automated testing framework based on node.js and selenium webdriver
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