On the web we can find a myriad of free software : among them the anti- plagiarism tools . But beware, they are not all the same and they are not all reliable . I have undertaken to check some of the most famous free plagiarism tools available online to verify the originality of the texts. Let's start by saying that we have used a single text for all software . The article used has a small part copied , equal to a percentage of 2%. Plagiarism is highlighted in yellow . I also cite the source of the acclaimed copying. Below you will find the reference URL and the offending...