Software compatibility testing is a process of testing the compatibility of software with its usage environment, including hardware, operating systems, and other applications. The checklist for such testing includes checking the compatibility of software with different device types, platforms, operating systems, databases, and browsers. It also involves testing the compatibility of software with different versions of its usage environment, such as the latest and previous versions. Additionally, the checklist should include testing the software’s compatibility with the devices’ internal memory and storage, which includes checking for memory leaks and other issues. Lastly, the checklist should include testing for any compatibility issues with the software's user interface, such as font size, color, and animation.