Cypress

Cypress is a wildly explosive, fiercely loved JavaScript-native disruptor that mathematically attacked the slow and flaky test problem that plagued Selenium-based frameworks. It engineered a terrifyingly fast, in-browser test execution engine. It is the absolute weapon of choice for JavaScript frontend development teams who mathematically demand a test runner that executes directly in the browser, provides real-time visual feedback, and eliminates async timing flakiness that haunts traditional WebDriver tests.