File Magic can be considered a reliable file-handling software that simplifies the task of opening, and working with numerous file types, such as complex or varied "dot" extensions.
If you need to work with common formats such as .pdf, and even less common file types such as . https://www.filemagic.com/en/page-layout-files/dot-file-extension/1-solution-for-all-your-dot-file-issues/