Head-to-Head Comparison
| Feature | Grammar Checker | LanguageTool |
|---|---|---|
| Price | Free, all features | Freemium ($4.99/mo premium) |
| Languages | English | 30+ languages |
| AI suggestions | Yes | Yes (premium) |
| Word limit (free) | No limit | 10,000 characters |
| Signup required | No | No (for basic) |
| Open source | No | Core engine is open source |
| Browser extension | No | Yes |
LanguageTool is the open-source grammar checker that supports over 30 languages — a massive advantage for multilingual writers. Its free tier is more generous than Grammarly’s, and its premium plan at $4.99 per month undercuts most competitors significantly.
The Language Gap
LanguageTool’s multilingual support is its defining feature. If you write in German, French, Spanish, Portuguese, or any of its supported languages, there is no better free alternative. Txtory is English-only — it cannot help with non-English text. For English writers, however, Txtory’s AI engine often catches nuance and style issues that LanguageTool’s rule-based approach misses.
Detection Approach
LanguageTool combines rule-based pattern matching with machine learning. Its rules are community-maintained and transparent — you can see exactly why something was flagged. Txtory uses a large language model that evaluates text holistically, which means it catches context-dependent errors better but cannot always explain the rule behind a suggestion.
The Bottom Line
For multilingual writing, LanguageTool wins by default. For English-only grammar checking with zero restrictions, Txtory offers a simpler, completely free alternative with AI-powered suggestions.