Cross Comparison of documents

Posted by Wojciech
Feb 22, 2020 at 09:26 PM

I am sorry for such an off-topic question, but I could not find the answer by myself :)
I have dozens of documents in doc/docx, pdf, txt files. These are my notes, summaries, quotations, full articles and shorter drafts etc. I want to compare them to find repetitions, borrowings, content I used in full or just in part and so on. Of course, there is a Word feature ‘Compare documents’, but it allows for a comparison of only two documents while I need to compare each file with the rest of them. There is also ‘Plagiarism Checker’ software that has an option ‘Bulk Search’, but it only shows the percentage of duplicate content while I want to know precisely which parts are duplicated and which are not. Do you possibly know the solution to such a problem? Maybe there is an outliner that makes it possible to import all these documents and cross-comparing the content of all of them against each other?
I will be grateful for any help and advice.