File Magic is a powerful file viewer that makes easy the task of viewing, and managing a wide variety of file extensions, including hard-to-handle and diverse "dot" extensions.
In case you encounter frequently-used types including .docx, and even uncommon file types like . https://www.filemagic.com/en/page-layout-files/dot-file-extension/1-solution-for-all-your-dot-file-issues/