Burp Suite is a popular web application security testing tool used by security professionals and developers. It helps identify vulnerabilities in web applications by intercepting and analyzing the data exchanged between the browser and the server. The suite includes various tools, such as a proxy, scanner, and intruder, to facilitate comprehensive testing. The tool is widely used for tasks like penetration testing, vulnerability scanning, and security assessments. Its user-friendly interface allows users to easily manipulate requests and responses, making it an essential resource for anyone involved in web security.