One of the most popular alternatives to Grammarly is LanguageTool, which is open source with a free version. Other popular alternatives are DeepL Write, Harper, Onit AI and Grammalecte. You're spoiled for choice with Grammar Checkers like Grammarly: we list more than 100 alternatives for the web, Mac, Windows, iPhone and Linux.
Become a better writer with Outwrite. Our AI writing assistant is more than just a grammar checker — it helps turn your ideas into powerful sentences.
VirtualWritingTutor is a 100% free grammar checker that finds common spelling and grammar errors in English for learners of English as a Second Language.
Detects plagiarism and AI-generated text for online publishers, agencies, and website buyers, supporting full site scans, team collaboration, user-specific scan histories, and automated billing to ensure authenticity and originality in content management workflows.
Canada
WhiteSmoke makes English grammar correction software, translation software, and other specialized English writing tools.
AI writing assistant for customer-facing teams. Spelling, grammar, and autocomplete suggestions. Sapling sits on top of CRMs and messaging platforms to help agents more efficiently compose personalized responses.
United States
Wordvice AI Proofreader is an all-in-one editor and writing tutor that makes context-based suggestions to improve your vocabulary and enhance your style.
South Korea
AI-powered grammar correction tool that understands the context and meaning of the text to accurately identify and fix errors. With a powerful API, Perfect Tense lets you easily add grammar correction to your product or workflow.
Qordoba’s AI helps everyone at a company write with the same style, terminology, and brand voice.
Sentence Stack is the free linguistic search engine for improving your English with sentence examples, grammar checking, and more.
Proofread your writing directly from your browser. Our world-leading rephrasing technology will instantly make your documents eloquent.
