jest-fast-check
Property based testing for Jest based on fast-check
Property based testing for Jest based on fast-check
Chai plugin for JSON Schema v4
A protractor runner that allows you to run errors from previous runs.
The command line tool to use the Galen Framework. This includes the wrapper above and webdriver downloads for different browsers
Small library that allows us to compare screenshots generated by puppeteer in our tests
A browser based html5 mobile application development and testing tool
JavaScript Testing utilities for React

Easily mock your REST API in Cypress using fixtures
Simple and complete Twig testing utilities that encourage good testing practices.
Intercept and respond to requests in the browser (XMLHttpRequest, XDomainRequest) and Node.js (http(s) module)
Serenity/JS Screenplay Pattern library for managing local Node.js test servers, including Express, Koa, Hapi, and Restify, to support comprehensive integration testing
Confidently unit and integration test your Next.js API routes/handlers in an isolated Next.js-like environment
Gulp plugin for aXe utilizing WebDriverJS
Extends Chai with assertions for the Sinon.JS mocking framework.
Awesome jest config
A module that will extend the default react testutils with extra helpers that will make life easier when testing your react components.
Access host info (OS, browser version, environment variables) in browser tests
fail cypress test on console error
Enzyme Context is a pluggable library which simplifies the process of testing components that rely on react context.