The best Grammar Checker alternative to QuillBot is LanguageTool, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to QuillBot and 19 are Grammar Checkers so hopefully you can find a suitable replacement. Other interesting Grammar Checker alternatives to QuillBot are Harper, Grammit, Refine and ProWritingAid.
A complete grammar checker, style editor, and mentor, offering 25 writing reports. It identifies repetitive language, vague words, overuse of adverbs, passive voice, and complex structures while providing a word explorer and thesaurus.
United Kingdom
Proofreading software compatible with LibreOffice, Word, Firefox, and Chrome. Supports 20+ languages, offering two tiers: free and premium, with features like customizable checks, Microsoft add-on, and error detection in gender, ISBN, and IBAN. Offers open-source web and desktop versions.
United States
Harper is an English grammar checker designed to be just right. I created it after years of dealing with the shortcomings of the competition.
United States
Grammit is an AI spell checker, grammar checker, and everything checker. You can install it for free from the Chrome Web Store.
United States
Canada
Fix grammar mistakes instantly with Grambo's intelligent grammar checker. Get grammar correction, spelling fixes, and style improvements everywhere you type. Private by default, blazing fast, and works offline. Prefer zero setup? Enable Grambo Cloud.
Eloquent is a proofreading software for English, Spanish, French, German, Portuguese, Polish, Dutch, and more than 20 other languages. It finds many errors that a simple spell checker cannot detect.
United States
Charm is a native macOS menu bar app that corrects your spelling, fixes your grammar, and predicts your next word in every app on your Mac. No separate window, no copy-paste, no browser extension.
CapyBro is a Windows tray utility that brings AI to any text on your PC via a global hotkey. Select text in any application (Word, Telegram, Outlook, browser, code editor) and press Ctrl+Shift+E — AI rewrites it in place.
Ukraine
RewritePal is a free, AI-powered tool designed to make your writing clear, compelling, and tailored to any audience. Whether you're a student, professional, or content creator, RewritePal helps you transform paragraphs into polished, reader-friendly text in seconds.
Professor-style AI feedback on your essays: thesis, evidence, organization, and citations. For students who want real draft improvement, not only spell-check.
United Kingdom
FCK.School provides a suite of AI-powered writing tools to help students write better, right now. Originally built to help students who's first language is not English, our goal is still the same: improve your writing.
United States
