Cypress
Fast, easy and reliable testing for anything that runs in a browser.
Nightwatch
UI automated testing framework based on node.js and selenium webdriver
Mocha
A simple, flexible, fun javascript test framework for node.js & the browser. (BDD, TDD, QUnit styles via interfaces)
Galen
Layout and functional testing framework for websites
Hashgrid
A little tool that inserts a layout grid in web pages, allows you to hold it in place, and toggle between displaying it in the foreground or background.
Testcafe
A Node.js tool to automate end-to-end web testing.
Fast Check
Property based testing framework for JavaScript (like QuickCheck) written in TypeScript
Type Script
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
Nock
HTTP mocking and expectations library
Faker.js
generate massive amounts of fake data in Node.js and the browser