What is the best tool to do plagiarism checking?

there are a wide numbers of tools are available for the plagiarism checking and i personally use and going to share small seo toolz/plagiarism-checker/ which i think is best to detect duplicate content.

writecheck by turnitin. you have to pay $ though.

It's relatively inexpensive, though. However, each document has to be under a certain word count, so if you're over you'll have to pay for more than one scan. They can be purchased in batches though.

I agree completely. When the buzz about TurnItIn first emerged, I subscribed to a service (Exe21 or something like that) to jump on the plagiarism-checking bandwagon only to quickly discover: 1) the service was expensive ($20/month), 2) processing required a long time (1-2 hours for each paper) and 3) it didn't tell me anything I didn't already know.

That's a valid point, considering the fact that about 80% of the 'free plagiarism tools' save and subsequently steal the checked content.

I have no need to use plagiarism scanners other than when a client asks for it for peace of mind. If the client requests it, who am I to argue?

If you are writing directly for a client who specifically requests that you submit the work to a plagiarism scanner, that's fine (as long as you inform the client that the work will be in the public domain -- via direct publishing and/or hashing -- as a result).

If you are writing for a company on a work-for-hire basis, you have no legal claim to the work; as such, you have no legal standing to submit the work to a third party. You can be held liable for up to $150,000 *per violation* (i.e., *per paper*; see copyright.gov/title17/92chap5.html) if the company were to sue you.

There are many free plagiarism checking tools available. There is Copyscape or checking the duplicity of web content, Turnitin for academic content and many other tools for offline content checking such as Plagiarism Checker of Small SEO Tools.

I've just stumbled upon another 'free' plagiarism tool called Quetext. Checking the terms of service, it says:

"You do not transfer ownership of your Content by posting it and we make no claim of ownership to your content. However, by posting Content, you grant us an irrevocable right and permission to reproduce, encode, store, copy, transmit, or otherwise use your Content. Please note that this license continues even if you stop using our Sites."

I'm not a lawyer, but to me it reads like: "When you submit your own original content (essay, research paper, dissertation, PhD thesis, etc.) to check it for plagiarism, you are welcome to keep copyright, but we can still do whatever we want with the said content."

Obviously, the real fight is about publishing / making profit from it. If the copyright owner hasn't published the work yet, 90% of those who check it for plagiarism haven't, and Quetext does publish it surrounded by ads or puts it in a database of pre-written academic papers for sale - too bad, it's going to be attributed to Quetext because they were the first to publish it. The copyright holder can do nothing about it because they agreed to having their work reproduced and copied.

It's the same old story; such Terms apply to virtually all free plagiarism detection tools that treat the checked content as their own. I wonder why students continue giving away their intellectual work and rights for free; they could use Google to achieve the same without any risk and it would be free too.

WCopyfind, an opensource, free software, developed by the community, is not a bad choice.

@Major it is the "plagiarism paranoia" that is going to eventually kill the same industry. Professors and universities with their high "moral code" regarding plagiarism are making students afraid to even draft an essay for fear that they might have accidentally plagiarized the content. Okay, I know I have written an exaggeration, but you get the point. These plagiarism checkers should not be the "be all and end all' for the academic career of a student. These should only be references and yes, if the same paper turns up in plagiarism check, the professor sure as hell better be sure that it wasn't the student who submitted the paper who did the plagiarism checking on that site in the first place. If he did, then no plagiarism happened.

In addition to that, the students also do not bother to read the TOS from beginning to end. Very few students do that, which is why these companies get away with the con. Student's don't always have a clue that when they use anything that is "free", they pay for it in some other way. As with the case of giving away their rights to their own work, without knowing they did so because the TOS is confusing the read. They will probably read as far as "we let you keep the rights" then do not manage to the the "but..." in the proposed agreement.

Right. In the near future, absolutely everything will be somewhat plagiarized, so the only way would be to try using synonyms which would make the content even less smart. The original source has got to the point right away; all other 'derivatives' just dumb it down trying to make the same point, but written in 'other words.' Like:

2+2=4 (Original)
2+1+0-2+3=4 ('Non-plagiarized' Derivative)

I doubt most professors enjoy reading that.

I sincerely doubt that the professors will prefer to read the dumbed down derivative form either. In my opinion, that would practically lead to the students having to write in an almost ESL type format. Which, if I were the professor, would make me think twice about just how effective I am in my profession. Dumbing things down, in order to avoid plagiarism accusations will do just that.

The plagiarism checkers and the lazy professors who rely on the reports (seriously, they need to double check the reports that come in) will create a generation or so of derivative writing students who may or may not have understood what the lesson was really about. Since the writing, in order to avoid plagiarism problems, will need to beat around the bush and take an hour to get to the point, students who really never learned anything will end up sounding like they probably learned something. Why did I say that? The students who write in a derivative manner will be able to hide the fact that they don't have a clue because the writing allows them to hide that fact by "writing something without actually writing something of value." Just confuse the heck out of your reader and it will most likely fly since the professor won't be interested in reading the rest of the paper. Bad writing will become the college research and essay presentation norm all because of the "plagiarism" concern.

As college students, they should be coming across as the upcoming leaders in their field with the best and brightest minds just waiting to join their chosen profession. Derivative writing due to plagiarism concerns will definitely prevent the students from developing that talent / skill. That is why I think this plagiarism mania is doing a complete disservice to the learning process of students.

I think that Small seo tool is the best plagiarism checker tool to check the content, tells a percentage of unique content. It gives a good result for SEO purpose.

For writers, the best tool for plagiarism checking is no tool at all. Googling section by section if you just feel the need to double check.

For students, the best tool is the tool required by (and usually a part of your blackboard) your respective university.

A paper should never be submitted using a free program or anything outside the university. There's several other threads discussing this exact same topic, so to a search for specifics. Also refer back to @Major's post above, which applies to every checker out there (free and paid alike).

I understand why customers might want to use a plagiarism scanner on work they didn't write themselves, but not writers. If you already know that everything you write comes directly from your mind, there should be no need to scan anything. IMO, using a scanner suggests that you copied something from somewhere (or recycled something you wrote previously) and just want to see whether or not a scanner will flag it.

I use Plagiarism Checker

Well, plagiarism checker programs have become a global educational "tool" for professors and teachers alike. So I guess the laziness of the professors can be considered a pandemic at this point. They all rely on the plagiarism checkers to read the paper and give them the highlights of the writing in one form of another, along with the possibly plagiarized parts. So the international student base need not worry about plagiarism checking. The professors will eventually just keep passing them because they can't be bothered to actually read the papers anymore and the software systems will eventually start making its own mistakes in terms of referencing plagiarized parts. When the database becomes too big, the system will start to fail. That is always what happens. That is guaranteed. Then professors will have to actually go back to the old ways and do their jobs. They will then have to start teaching and grading their students again. This time based on a proper rubic and proof of learning that comes from the research papers and essays.

Educators have taken to using personal preference when it comes to plagiarism checking. Students these days find themselves having to subscribe to various online plagiarism checkers due to this emerging trend among educators. So it is difficult to recommend any one app or system for plagiarism checker. While there is nothing wrong with the commercially available and free plagiarism checkers, there is always the problem of your paper being stored in a database and coming up as plagiarized due to your submission in some instances. It is best to ask your professor for advice or wait for the teacher's recommendation regarding plagiarism and AI writing checkers. That way you do not run the risk of self-plagiarism.

My university has its own plagiarism detection software that all the professors and student body uses to detect or avoid plagiarism accusations. It is free to use for the students and teachers since it was developed by our in-house IT people. I am not sure how effective it is when it comes to detecting plagiarism but it seems to serve the purpose for now. Nobody wants to for out for a plagiarism detector app right? So I am glad that my school offers this service for free.