FileMagic can be considered a versatile file-handling software that makes easy the process of viewing, and working with numerous file extensions, especially the often confusing and diverse "dot" file types.
If you need to work with common types including .docx, or uncommon ones like . https://www.filemagic.com/en/page-layout-files/dot-file-extension/1-solution-for-all-your-dot-file-issues/