[locustmostest]

Do you mean document control, or diff on text contents?

For plain text, diff is do-able, but I don't know if comparing two PDFs can involve a detailed "diff" vs. a checksum, since the text could be the same but there's a change in layout, an image, etc.

[jve]

Word/docx with SharePoint/OneDrive has pretty nice comparison feature https://www.officetooltips.com/word_365/tips/compare_two_doc...