PaperRater is a free online writing analysis tool that combines Natural Language Processing, Machine Learning, and Information Retrieval to check essays and papers for grammar errors, spelling mistakes, and plagiarism. The platform compares submitted text against over 10 billion documents on the internet and in print to detect originality issues. It provides automated scoring across grammar, spelling, style, vocabulary, sentence structure, and clarity, alongside detailed feedback to help writers improve their work. The tool is used by schools and universities across over 100 countries.
Free access to all core features without requiring a paid subscription
Simple, uncomplicated interface suitable for new and entry-level writers
Combines multiple writing tools (grammar, plagiarism, style) on a single platform
Grammar correction is highly accurate, powered by advanced machine learning algorithms
Does not store submissions in a database, preventing false plagiarism flags if the same paper is checked elsewhere later
Plagiarism detection accuracy is below industry standards, particularly for paraphrased or slightly modified text
Less effective at identifying plagiarism types beyond direct copying and pasting
Premium version offers faster scanning and better plagiarism detection but does not significantly expand database coverage
Inconsistent results when evaluating plagiarism compared to specialized plagiarism detection tools
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| Logo | Software Name | Rating | Reviews | Starting Price | Trial |
|---|---|---|---|---|---|
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Linguix | 3.8 | 96 | 0 USD ($) | 1-7 Days |
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Ginger | 3.8 | 36 | 0 USD ($) | 1-7 Days |
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PerfectIt | 3.8 | 63 | 0 USD ($) | 14 Days |
 |
Grammar Checker | 3.8 | 63 | 0 USD ($) | 1-7 Days |
 |
Proofread Bot | 3.8 | 63 | 0 USD ($) | 0 Days |
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