Copyscape
Viper

Copyscape vs Viper

Copyscape

Copyscape

16Alternatives
Viper

Viper

7Alternatives

Overview

About Copyscape

A Plagiarism Checker - Duplicate Content Detection Software

About Viper

A plagiarism checker with an easy-to-use interface

Viper is free and easy tool to check plagiarism, which scans over 10 billion resources and highlights areas of plagiarism

Copyscape categories

Viper categories

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