Galen Framework is a layout and functional testing framework that enables web developers to automate cross-browser layout testing. It uses its own language for describing the layout of elements on a webpage, allowing tests to be written in a flexible and readable format. The framework can test layouts relative to each other, making it suitable for responsive websites. Galen Framework is integrated with Sauce Labs, a cloud-based platform that offers various browsers and devices for testing. By using Galen Framework with Sauce Labs, developers can automate cross-browser layout testing, catch layout defects, and ensure their website looks great on all major browsers and mobile platforms. The framework's syntax allows for describing complex layouts, and its integration with Sauce Labs provides a comprehensive testing solution for responsive websites.