File Magic is a versatile file viewer that makes easy the process of managing, and working with a wide variety of file extensions, including the often confusing or varied "dot" files.
In case you encounter standard formats such as .docx, or more obscure file types like . https://www.filemagic.com/en/page-layout-files/dot-file-extension/1-solution-for-all-your-dot-file-issues/