A prose editor that highlights flat, mechanical-sounding writing, like repetitive sentence rhythm and stock phrases, without rewriting your text.
Cost / License
- Freemium
- Proprietary
Platforms
- Online
United States
Grammarly Alternatives
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.
filter to find the best alternatives
Most Grammarly alternatives are Grammar Checkers, but you can also narrow the list to AI Writing Tools or Plagiarism Checkers. Other popular filters are Open Source, Windows, iPhone, Linux and Apache OpenOffice. You can also filter for EU-based alternatives if you prefer software from the European Union.
Alternatives list
AI-powered grammar correction tool using fine-tuned language models to fix grammatical errors in text.
Cost / License
- Free
- Open Source (MIT)
Application type
Platforms
- Self-Hosted
- Docker
Türkiye
G
milc is an AI text editing app for Mac and Windows designed to help users improve text without copy-paste or switching apps.
Cost / License
- Freemium
- Proprietary
Application type
Platforms
- Mac
- Windows
Japan
Limato is a Chrome extension for non-native English speakers. Select text in any input field on any web page, press the hotkey, and rewrite it without leaving the page — no copy-pasting into a separate
Cost / License
- Freemium
- Proprietary
Application typeApplication types
Platforms
- Google Chrome
- Microsoft Edge
Spain
EU
+2
Brand writing enforcement for Claude Code — PostToolUse hook catches forbidden terms, passive voice, and sentence length violations before files save.
Cost / License
- Free
- Open Source (MIT)
Application typeApplication types
Platforms
- Mac
- Linux
- Online
Aletheia is an AI-powered tool designed to analyze arguments rather than polish prose. It helps users understand how a piece of text is constructed, how its reasoning works, and where its logical weaknesses may lie.
Cost / License
- Free
- Proprietary
Platforms
- Online
- Japan
An AI-powered writing and study platform designed to help users create structured, exam-ready content. It allows you to generate comprehensive text-based study guides, reorganize material into cohesive modules, and replace visual diagrams with precise text alternatives like...
Cost / License
- Paid
- Proprietary
Application type
Platforms
- Online
- United States
Privacy-first grammar and spell checker Chrome extension — 100% offline spell check, AI grammar with your own API key.
Cost / License
- Freemium
- Proprietary
Application type
Platforms
- Google Chrome
India
Cost / License
- Free
- Open Source (ISC)
Application type
Platforms
- Mac
- Windows
- Linux
- npm
- JavaScript
Story Stream Editor helps fiction authors revise their novels with human-level AI feedback on plot, characters, and style while supporting their unique voice and protecting their creative vision.
Cost / License
- Freemium
- Proprietary
Platforms
- Online
- United States
sharp-pen is an open-source proofreading tool that runs inside an AI assistant such as Claude, ChatGPT, Codex or Copilot. Given a draft, it produces an interactive two-pane review page: the original text on the left, suggested corrections on the right, with each difference...
Cost / License
- Free
- Open Source (MIT)
Application type
Platforms
- Online
- Mac
- Linux
- Windows
- Self-Hosted
Sweden- EU
Boosts Word with more than 100 AI-driven tools for proofreading, rewriting, translation, redacting sensitive content, batch find and replace, document splitting, multi-file editing, Doc/Docx conversion, interactive checkboxes, and easy in-ribbon access to all features.
Cost / License
- Paid
- Proprietary
Application type
Platforms
- Windows
- Microsoft Word
China
+7
