Viper, the plagiarism checker that's accurate, easy and free...

Checked your essay for plagiarism?

To avoid plagiarism, you should always reference correctly according to your institution's guidelines and use Viper. Viper is fast becoming the plagiarism checker of choice, rising over and above other plagiarism checkers, with over 10 billion resources scanned and an easy interface which highlights potential areas of plagiarism in your work. Best of all, it's free!

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It's the anti-venom to plagiarism...

Universities have ever tightening rules on plagiarism, and Viper is all about giving you a free service that guarantees your peace of mind.

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