Very useful, thank you very much

Dear Dalia,

Kindly go through this link. May be of some help to you.

1.Top 20 best free online plagiarism checker tools and websites {2016}

2.Top 10 Free Plagiarism Detection Tools For Teachers.http://elearningindustry.com/top-10-free-plagiarism-detection-tools-for-teachers.http://www.digitalgyd.com/top-20-best-online-plagiarism-checker-tools-free/

Mr Shokraneh,

I assume you mean TurnITin...  probably a typo.  I agree with you that Google can be used as well, provided it has been submitted to a  Internet site.  But,  a student submission -- let us assume it is original and has not been submitted to an Internet site; it will not be be detected as plagiarism if another student copies parts of it and this version is checked for signs of plagiarism.

I have  had a student who submitted an assignment, and I could immediately see that it was NOT her work; the use of the language could only have come from a native speaker of English but the student was Dutch speaking and her English language skills were not particularly good. I complained. The institution has a local variant of a plagiarism checker and I was asked to submit the work to this tool. It showed no evidence of plagiarism. I then sent it off to a lecturer who teaches  academic English  at a  department of languages at a university, and he said it was not the work of a Dutch student. I then sent it off to an American lady who also happens to teach English  and she came back to say that the writing was from the pen of a native English-speaking person, as I had  suspected.

 Users of plagiarism checking tool should be aware of the context when undertaking plagiarism checks. That said, some of the other tools can be very helpful. I have no experience of ITHENTICATE... others might well be able to report on their experiences.