✓ With its easy-to-use interface and highly detailed scanning process, it only takes three simple steps for Viper to review your document for plagiarism and produce a full report.
Viper is a plagiarism checker tool that can scan and compare documents to billions of sources online. There is no free version available, but they will allow you to try out the service for free with a free trial.
Viper is another popular online plagiarism tool that allows limited checking for free. 10 billion sources are used when checking for plagiarism. They’re not listed on the website, but described this way: “Viper checks for plagiarism against 10 billion sources, scouring books, papers, PDFs and journals across the web to find matches with your work.”
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