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LanguageTool
LanguageTool — open source alternative
Open source grammar, spelling, and style checker.
Strengths
- Supports 25+ languages.
- Self-hostable — your text never leaves your server.
- Browser extensions and editor integrations.
Weaknesses
- Grammar feel less polished than Grammarly on edge cases.
- Premium rules require paid tier or self-host config.
- Java-based deployment footprint.
Ad slot — OSS middle
LanguageTool is used as an alternative to
More open source in this category
Discover other projects tagged Writing & Grammar Tools on the category page.
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