Testing tools are software applications designed to help developers and testers ensure that their programs work correctly and efficiently. These tools can automate various testing processes, such as checking for bugs, verifying functionality, and assessing performance. By using testing tools, teams can save time and reduce human error, leading to higher quality software. There are many types of testing tools available, each serving a specific purpose. For example, Selenium is popular for automating web application testing, while JUnit is widely used for unit testing in Java applications. Choosing the right testing tool can significantly improve the development process and enhance the final product.