Open Source Grammarly Alternatives

The best open source alternative to Grammarly is LanguageTool. If that doesn't suit you, our users have ranked more than 100 alternatives to Grammarly and 11 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Grammarly are Grammalecte, Kerlig, Editsaurus and Vale.

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Grammarly alternatives are mainly Grammar Checkers but may also be AI Writing Tools or Plagiarism Checkers. Filter by these or use the filter bar below if you want a narrower list of alternatives or looking for a specific functionality of Grammarly.

Grammarly

233

Grammar Checker
Freemium • Proprietary

Grammarly Editor is an automated proofreader that corrects contextual spelling mistakes, checks for more than 250 common grammar errors, enhances vocabulary usage, and suggests citations.

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Grammarly alternatives page was last updated Mar 29, 2024

Expresso app
Expresso is a little tool to edit texts and improve your writing style. It will teach you to express yourself through writing more efficiently and help make your texts more readable, precise, and engaging.
28 Expresso app alternatives
License model
- Free • Open Source
Platforms
- Online
Expresso app Features
Grammar tool
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Expresso app VS Grammarly
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write-good
Naive linter for English prose for developers who can't write good and wanna learn to do other stuff good too.
19 write-good alternatives
License model
- Free • Open Source
Application type
- Grammar Checker
Platforms
- Mac
- Windows
- Linux
- Atom
write-good Features
Spell Checking
Works Offline
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write-good VS Grammarly
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proselint
Writing is notoriously hard, even for the best writers, and it's not for lack of good advice — a tremendous amount of knowledge about the craft is strewn across usage guides, dictionaries, technical manuals, essays,...
9 proselint alternatives
License model
- Free • Open Source
Platforms
- Linux
- Python
proselint Features
Command line interface
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proselint VS Grammarly
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Just Not Sorry -- the Gmail Plug-in
just-not-sorry - Gmail Plug-in that warns you when you write emails using words which undermine your message
32 Just Not Sorry -- the Gmail Plug-in alternatives
License model
- Free • Open Source
Platforms
- Mac
- Windows
- Linux
- Chrome OS
- Google Chrome
Just Not Sorry -- the Gmail Plug-in Features
Proofreading
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+1
Just Not Sorry -- the Gmail Plug-in VS Grammarly
Is this a good alternative to Grammarly?