Graphical User Interface (GUI) testing tools are crucial for ensuring the visual and functional integrity of software applications across different platforms, which is essential for delivering a seamless user experience. These tools simulate user interactions to validate that visual elements and workflows are functioning correctly on various devices, browsers, and environments. Among the leading GUI testing tools are LambdaTest SmartUI, which offers AI-driven automation and cross-browser testing; Selenium, known for its open-source flexibility and integration capabilities; Cypress, which provides developer-friendly, real-time testing; and Playwright, Microsoft’s framework with strong support for modern UIs. Additionally, tools like Puppeteer, Appium, and UiPath offer unique features targeting specific testing needs, such as mobile automation and RPA-driven workflows. As the field evolves, trends like AI-powered self-healing tests, low-code/no-code solutions, and deeper CI/CD integration are shaping the future of GUI testing, promising smarter and more scalable solutions.