Robot Framework is an open-source automation framework primarily used for acceptance testing and robotic process automation (RPA). It utilizes a keyword-driven approach, allowing users to write test cases in a simple, human-readable format. This makes it accessible for both technical and non-technical users, as they can create and manage tests without needing extensive programming knowledge. The framework supports various libraries and tools, enabling integration with different testing tools like Selenium for web testing and Appium for mobile testing. Its extensibility allows developers to create custom libraries in languages such as Python or Java, enhancing its functionality to meet specific testing needs.