Best Free AI Grammar Checker tools

Originality.ai is an AI content detector and plagiarism checker for writers, publishers, educators, and teams.

Dechecker is a free AI content detector that analyzes text for AI-generated patterns and offers rewrite guidance.

Quetext is an AI-powered writing checker for plagiarism, AI-generated text, grammar, summarization, and paraphrasing.

An AI paraphrasing tool that rewrites text in multiple modes while preserving meaning and improving clarity.

An all-in-one AI study and writing assistant with humanizing, detection, translation, summarization, and plagiarism tools.

Hemingway Editor helps you write more clearly by highlighting complex sentences, passive voice, adverbs, and grammar issues.

Wordtune is an AI writing assistant for rewriting, proofreading, translation, and summarization in English.

Winston AI is an AI content detector and plagiarism checker for identifying machine-generated text, images, and deepfakes.

Bartleby is a homework help and textbook solutions platform with step-by-step answers, writing tools, and 24/7 expert support.

Aithor is an AI essay writing assistant that helps users build structures, draft content, check originality, and format citations.

Prepostseo is a free online toolkit for SEO, writing, plagiarism checking, and website management tasks.

iAsk AI is a free AI answer engine and homework helper that provides instant answers with citations, plus writing and grammar tools.

Paperpal is an AI academic writing assistant that helps students and researchers write, edit, cite, and check manuscripts across popular writing tools.

ProWritingAid is a writing assistant that helps authors and other writers improve grammar, style, clarity, and storytelling.

Superhuman is an AI-powered productivity platform for email, docs, and cross-app assistance that works inside the tools you already use.

Copyleaks is an AI content, plagiarism, and authenticity detection platform for text, images, video, and code.

Scribbr provides academic writing tools and services for proofreading, plagiarism checking, citations, and AI writing support.

LanguageTool is an AI-based grammar checker and writing assistant that helps correct spelling, grammar, punctuation, style, and paraphrasing.

ZeroGPT is an AI content detector and writing toolkit for checking text, images, plagiarism, grammar, and more.

GPTZero is an AI content detector and writing analysis platform for identifying AI-generated text, plagiarism, and authorship signals.

Quillbot is an AI writing platform for paraphrasing, grammar checking, summarizing, and creating polished content across web and browser apps.

Grammarly is an AI writing assistant that helps users check grammar, improve tone, rewrite text, and generate content.