Web application testing is crucial to ensure a smooth user experience and deliver a quality-rich product. It involves verifying that a web application is ready for use by identifying bugs, errors, and vulnerabilities. Various techniques are used in web application testing, including functionality testing, performance testing, interface/UI testing, usability testing, compatibility testing, and security testing. Several tools exist to support web application testing, such as TestComplete, Selenium, Katalon Studio, Ranorex Studio, BugBug, Mabl, OWASP ZAP (Zed Attack Proxy), and Tricentis Testim. Each tool offers unique features, pricing plans, and integration options that cater to different needs and requirements of users. It is essential to compare the features, prices, and integration options of various tools to choose the right one for web application testing.