The free LanguageTool alternative that ships every feature you actually use
LanguageTool is the most-popular open-ish Grammarly alternative, but the free tier caps each check at 10,000 characters and the most useful features (paraphrasing, style refinement) live behind Premium at ~$60/year. Here is the free alternative.
AI Grammar Checker vs LanguageTool, feature by feature
| Feature | Molixa | LanguageTool |
|---|---|---|
| Single check cap | Unlimited per check (5/day) | 10,000 chars (Free) |
| Pricing | Free, $4/mo Pro | Premium ~$4.99/mo billed annually |
| Multi-tone preview | 5 tones side-by-side (Pro/Friendly/Confident/Empathetic/Direct) | Tone detection only (Premium) |
| Custom style guide upload | Yes (PDF/DOCX/TXT) | Custom dictionary, not style guide |
| Inclusivity scanner | Free | No |
| Reading-level targeting | Yes (target grade level) | Premium |
| Languages | 30+ | 31+ (their strength) |
| Self-hostable | No | Yes (their differentiator) |
4 reasons people switch to Molixa
Multi-tone preview, free
Paste a paragraph, see how it reads in 5 different tones side by side. LanguageTool only detects the current tone behind Premium — it does not show you alternatives.
Bring your own style guide
Upload your team's style guide (PDF, DOCX, or text). The checker enforces it on every submission. LanguageTool offers a custom dictionary but not a full style guide.
Inclusivity + reading level out of the box
Flags non-inclusive language (gendered terms, ableist phrasing) and lets you target a specific Flesch-Kincaid grade level. LanguageTool does not ship inclusivity scanning.
No per-check character cap
LanguageTool Free caps each check at 10,000 characters. Ours runs the full document in one check (with a daily-rate-limit of 5 checks).
When to pick Molixa vs LanguageTool
LanguageTool's killer feature is self-hostability. If you are at a privacy-conscious organization (legal, healthcare, GDPR-strict enterprise) and need grammar checking that never touches a third-party server, LanguageTool is the only serious option.
For solo writers, freelance editors, marketers, and anyone okay with a cloud-based checker, LanguageTool's Free tier caps each check at 10,000 characters and gates most useful features behind Premium.
Molixa's grammar checker ships the depth (multi-tone preview, custom style guides, inclusivity scanner, reading-level targeting) without the cap. We do not have a browser extension yet and we are not self-hostable. For cloud-based long-form grammar work, the free alternative wins on feature depth.
Where LanguageTool is still the better choice
Honest answer first. LanguageTool has real strengths. If any of these match your workflow, stick with them.
- LanguageTool is open-source and self-hostable — the killer feature for privacy-conscious teams and enterprises with on-prem requirements.
- LanguageTool's browser extensions for Firefox, Chrome, Edge, and Safari are mature.
- LanguageTool has native LibreOffice and Microsoft Word integrations.
- LanguageTool supports 31+ languages with strong coverage for German, French, Spanish — better than most competitors.
- LanguageTool is GDPR-friendly and has EU data residency.
Try AI Grammar Checker, it's actually free
No signup. No watermark. No 5-minute paywall after the trial.
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