18.3
QuillBot is a collection of AI tools for writing, communication, design, coding, and collaboration.
Free planAndroidiOSWeb
Best AI Grammar Checkers in 2026
Whether you are polishing a document or checking text as you write, grammar tools differ in their editing features and where they work. Compare AI rewrite suggestions, supported languages, custom rules, and document integrations; browser extensions and desktop apps may also matter for your workflow. Team administration is worth checking if colleagues will use the same service. LanguageTool, Outwrite, and Trinka are…
28.1
GrammarCheck.ai is a writing tool that checks and corrects grammar, spelling, and punctuation.
Free planAndroidiOSWeb
37.9
Harper is a writing tool for checking grammar and spelling, with style suggestions for refining text.
Free planOpen sourceAndroidiOSWeb
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Grammarly
Grammarly is a writing assistant from Grammarly, founded in 2009 and now part of Superhuman.
Free planAndroidiOS7.8From $12 a month - 5
Wordvice AI
Wordvice AI is an online proofreader and grammar checker aimed at students and academic writers.
Free planWebExtensionmacOSWindows7.8Free plan - 6
Writefull
Free planWebAPIExtensionmacOS7.8From $150 a year - 7
Linguix
Linguix is an AI writing assistant for improving grammar, clarity, and communication across websites and supported apps.
Free planAndroidiOSWebAPI7.6From $5 a month - 8
Outwrite
Outwrite is an AI writing assistant that suggests stylistic and structural improvements alongside spelling and grammar corrections.
Free planWebAPIExtensionmacOS7.5From $7.95 a month - 9
Trinka
Trinka is an AI grammar correction and language enhancement assistant designed for academic and technical writing.
Free planWebAPIExtensionmacOS7.5From $300 a year - 10
Grammalecte
Grammalecte is free, open-source software for checking French grammar and typography.
Free planOpen sourceAPIExtensionLinuxmacOS7.4Free plan - 11
Sapling
Sapling combines writing assistance with developer tools for adding language model-powered functionality to applications.
Free planWebAPIExtensionSelf-hosted7.4From $144 a year - 12
7.2 - 13
LanguageTool
LanguageTool is a writing assistant for checking grammar, spelling, punctuation, casing, and style across 31 languages.
Free planiOSExtensionmacOSWindows7.2Free plan - 14
Scribens
Scribens checks grammar and spelling in written text and explains detected mistakes to help users understand errors and improve their writing.
Free planAndroidiOSWebExtension7.2From €5,990 a year - 15
ProWritingAid
ProWritingAid is a writing tool that provides grammar and style suggestions through browser extensions and a desktop editor.
Free planExtension7.1From $120 a year - 16
Microsoft Editor
Microsoft Editor checks spelling, grammar, capitalization, and punctuation, with additional suggestions for clarity, concision, and formality.
WebExtensionmacOSWindows7.0 - 17
Wordeep
Wordeep is an English writing assistant for grammar, spelling, and context.
AndroidiOSWebExtension7.0From $99 a year - 18
ORFO
ORFO is a text-checking system for spelling, grammar, punctuation, and style, with Windows, macOS, and web options.
WebmacOSWindows6.9 - 19
Slick Write
Slick Write is a free web writing checker for grammar errors, possible style problems and other characteristics of text.
Free planWebExtension6.8Free plan - 20
Write Wise
Write Wise is an Android writing assistant that works while you type across Android apps.
Free planAndroid6.7Free plan - 21
Antidote
Antidote is a writing assistance product with style suggestions and tone detection.
AndroidiOSWebWindows6.6From €48 a year - 22
Poli
Poli is a grammar correction and translation assistant offered as a browser extension and macOS desktop app.
Free planExtensionmacOS6.3Free plan - 23
Typlx
Typlx is an open-source, privacy-first grammar checker that works locally and offline.
Free planiOSExtensionSelf-hosted6.3Free plan - 24
GrammarCheck.net
GrammarCheck.net is a free web checker and browser extension for English spelling, grammar, punctuation, and contextual usage.
Free planWebExtension6.2Free plan - 25
SpellBoy
SpellBoy is a free web-based spelling and grammar checker from SpellBoy, operated by C.
Free planWeb6.1Free plan