https://www.fileviewpro.com/en/file-extension-xcu/
FileViewPro is a all-in-one file viewer that allows users to open and manage a multitude of file types. Regardless if you're handling text documents, media files, or less common formats, FileViewPro presents a simplified solution for working with them all in one place. Its user-friendly interface makes it accessible for users of all experience levels, dispensing with multiple specialized programs to handle different file formats. One of its key features is its ability to open proprietary and less common file formats, such as XCU files,