TestLink is a web-based, open-source test management tool designed to facilitate and streamline the process of software testing. It allows users to create, manage, and execute test cases, organize them into test plans, and track their execution results. TestLink supports requirements management, enabling users to associate test cases with specific requirements to ensure traceability. Additionally, it features reporting capabilities and can integrate with various bug tracking systems to optimize defect management. With its collaborative functions, test teams can coordinate effectively, maintaining transparency and efficiency in the testing process.