Software Alternatives & Reviews

Viper Reviews

Viper is the plagiarism checker of choice!

External sources with reviews and comparisons of Viper

17 Plagiarism-Checking Alternatives to Turnitin
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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