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Indie alternatives to Grammarly
8 products made by independent developers and small teams that do what Grammarly does, 8 of them with a free plan. Free and open-source options come first.
At a glance
| Product | Price | Open source | Self-host | Platforms |
|---|---|---|---|---|
| Harper | Free | Yes | – | Browser extension, Mac, Windows, Linux, Web |
| DeepL Write | Free plan | – | – | Web, Mac, Windows, Browser extension |
| Hemingway Editor | Free plan | – | – | Web, Windows, Mac |
| HyperWrite | Free plan | – | – | Web, Browser extension |
| LanguageTool | Free plan | Yes | – | Web, Mac, Windows, Browser extension, API |
| ProWritingAid | Free plan | – | – | Web, Mac, Windows, Browser extension |
| QuillBot | Free plan | – | – | Web, Browser extension |
| Wordtune | Free plan | – | – | Web, Browser extension |
The alternatives
2. DeepL Write
AI writing assistant for clearer text
AI tool from DeepL that rephrases and corrects text to improve clarity and tone.
Free plan · Web, Mac, Windows, Browser extension · Website ↗
3. Hemingway Editor
Highlights hard-to-read sentences to make writing clearer
Hemingway Editor flags long sentences, passive voice and complex words so you can make writing bold and clear, in the browser or as a desktop app.
Free plan · Web, Windows, Mac · Website ↗
4. HyperWrite
AI writing assistant and research tools
AI writing assistant with autocomplete, rewriting and research tools that works across the web.
Free plan · Web, Browser extension · Website ↗
5. LanguageTool
Grammar, style and spell checker for many languages
A multilingual grammar and style checker available as browser extension, desktop and office add-ins, with an open-source core.
Free plan · Web, Mac, Windows, Browser extension, API · Website ↗
6. ProWritingAid
Grammar checker and style editor for writers
A writing assistant that checks grammar and style and offers in-depth reports on readability, pacing and repetition, aimed at authors and students.
Free plan · Web, Mac, Windows, Browser extension · Website ↗
Questions
Is there a free alternative to Grammarly?
Yes. 8 of the 8 indie alternatives listed here have a free plan or are free: Harper, DeepL Write, Hemingway Editor, HyperWrite and 4 more.
Is there an open-source alternative to Grammarly?
Harper and LanguageTool are open source.
Which Grammarly alternatives work on Mac, Windows, iPhone or Android?
On Mac: Harper, DeepL Write, Hemingway Editor and 2 more. On Windows: Harper, DeepL Write, Hemingway Editor and 2 more. On Linux: Harper. As a browser extension: Harper, DeepL Write, HyperWrite and 4 more.
What makes these alternatives to Grammarly “indie”?
They are built by independent developers or small teams rather than large companies. Each one is listed because it does the same core job as Grammarly.
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