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Viper: The Best Free Plagiarism Checker

Updated on May 2, 2012

Viper scans content for plagiarism


Check out other software for writers

Let Viper deal with plagiarism

These days every single online writer is concerned about plagiarism. Articles get stolen every day and it's really hard to fight it. There are just too many blogs and website that use stolen content and even don't bother crediting the author with a link. But sometimes even the best of writers accidentally plagiarise other content or recycle their own. Now, I'm sure you wouldn't want your articles marked as duplicate content. The solution is simple - use a plagiarism checker to check all your work and run plagiarism searches for your published articles. There are lots of free plagiarism checkers that you can use and Viper is by far the best of them all.

What can Viper do?

Unlike a lot of other plagiarism checkers, Viper is not an online tool - you need to download it and install it on your computer. This has a lot of advantages over online plagiarism checkers, because Viper can not only check your content and compare it with 10 billion of sources, but it can also check it against other files on your computer. This means that you will be able to stop yourself from publishing the same content twice and getting penalised for that.

Viper is extremely easy to use and is great for scanning both articles and academic writing. Unlike a lot of other tools, it doesn't limit the length of document you can scan, so you can even check your newly written ebook for duplicate content (though it will take a really long time). You can also resubmit your content for re-checking as many times as you want to, which is a huge bonus.

What I really love about Viper is that it offers side-by-side comparison when similar content is detected and highlights similar bits in both articles.This allows you to quickly edit your work if there is any duplicate content. In addition to that, you will be given a percentage of similar content throughout the document. Viper also links to the website where similar content was found, so that you can follow the URL and examine the content in question. But that's not really necessary because Viper is 100% accurate.

And now the best bit - Viper is absolutely free to use. Have you ever come across a free plagiarism checker that has such an extensive array of features? To be honest, I haven't. Even a lot of paid plagiarism checkers are not as good as Viper. You can download Viper here and start using it straight away. Don't forget to let me know what you think about the tool in your comments.

If you are looking for quick free online plagiarism checkers, have a look at this article.

© 2011 Snurre


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    • RTalloni profile image


      6 years ago from the short journey

      This info will be helpful to many. Linking to my hub on the same topic if you have no objection--thanks!

    • profile image


      7 years ago

      using this app for a while now.. totally awsome!

    • Snurre profile imageAUTHOR


      7 years ago

      James, glad you found this useful!

    • James A Watkins profile image

      James A Watkins 

      7 years ago from Chicago

      Thank you for this needful information. I will check this out.

    • Snurre profile imageAUTHOR


      7 years ago


      Glad you found it useful! Thanks for your vote.

    • Brett.Tesol profile image

      Brett Caulton 

      7 years ago from Asia

      Voted up and useful!!

      Great prog, cheers for the 'heads up'. I've been looking for something to do this for ages, as I often write SEO content. However, most free checkers are very limited!

      Thanks for sharing :-) ... good freebie


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