Cypress
A JavaScript end-to-end testing framework that runs tests directly in the browser alongside the application.
What is Cypress?
What is Cypress?
Cypress is a popular open-source framework for writing end-to-end and component tests in JavaScript, known for its developer-friendly API, time-travel debugging, and in-browser test runner. It runs in the same event loop as the application, which makes some interactions convenient but also imposes architectural constraints around multiple tabs, origins, and native events. Teams weighing tools often compare it with Playwright, which runs out-of-process across Chromium, Firefox, and WebKit. QI generates portable Playwright code you fully own, so you are never locked into a single framework's runtime.