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Best Plagiarism Checker & Proofreader

Grammarly is an automated proofreader and plagiarism checker.
It corrects up to 10 times as many mistakes as other word processors.

Detect plagiarism by checking your text against over 8 billion web pages.
Instantly find and correct over 250 types 250 types
of grammatical mistakes.

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Improve word choice
with context-optimized vocabulary suggestions.
Compatible with
Word™ & Outlook®.

Grammarly is the world’s most accurate grammar checker

250 points of grammar

Grammarly scans your text for proper use of more than 250 advanced grammar rules, spanning everything from subject-verb agreement to article use to modifier placement.

Contextual spellchecker

Correctly spelled words used in the wrong context mean embarrassing mistakes for you. Grammarly spots erroneous use of lose/loose, affect/effect. lie/lay, there/their/they’re and many more commonly confused words.

Vocabulary enhancement

Words can make an impact, or they can fall flat. Enhance your sentences with Grammarly’s word choice suggestions that optimize for the context of your document. Readability and meaning are improved instantly.
Lilian Nattel
Writer, Toronto, Canada
«Grammarly out-performed Word’s grammar and spell-checker by far.»