LanguageTool
Grammar, spelling and style checker for over 30 languages, with an AI paraphraser, in a web editor, desktop and iOS apps, and add-ons.
- Free plan
- Verified free plan
- Paid from
- Not yet confirmed
- Known for
- Paraphrasing Tool, LanguageTool Editor, Team Dictionary
- Your data
- Not used: inputs from Individual and Team Plan users are not used to train models; no opt-out needed.
What makes LanguageTool different
Multilingual grammar, spelling and style checker
01
Paraphrasing Tool
AI rewrite of sentences in a chosen tone, such as fluent, formal, academic or simpler.
Use it for: Rewording a sentence to sound more formal or concise.
How to start
- Enter or paste the text you want to rewrite on the left
- Choose one of the tones above the text
- Click the “Paraphrase Text” button
No plan limit statedlanguagetool.orgchecked 2026-10-1102
LanguageTool Editor
Distraction-free editor with grammar, style and tone suggestions, personal dictionary, style guide and writing statistics.
Use it for: Checking long documents and imported Word files in one place.
How to start
- Visit www.languagetool.org
- Start typing or paste your text into the editor
No plan limit statedhelp.languagetool.orgchecked 2026-10-1103
Team Dictionary
Shared list of custom words and names that are never marked as errors for anyone on the team.
Use it for: Keeping product names and industry terms consistent across a team.
How to start
- In the Editor, go to "Settings" → "Team Dictionary"
- Click “Import dictionary” to upload a CSV word list
Limits
How much you can really use it, in the official pages' own words. Limits change often; check the date on each answer.
- Free plan limitsWhat the free plan stops you doing: minutes, credits, meetings or features.
- 2,000 characters per text field, 3 AI sentence rephrasings a day, Picky Mode limited.languagetool.orgchecked 2026-10-11
Free plan
Privacy and your data
What happens to what you type, upload or make, from the provider's privacy and terms pages. Business plans often differ; the plan is named under each answer.
- Used to train AIWhether what you type, upload or record is used to train or improve the provider's models by default.
- Not used: inputs from Individual and Team Plan users are not used to train models; no opt-out needed.languagetool.orgchecked 2026-10-11
Cost
- Free planA free plan that is not time-limited. Trials are listed separately.
- Supportedhelp.languagetool.orgchecked 2026-10-11
Free plan
Plans
Free
Free plan
- $0.00 / month
Premium
Paid, individual
Amount not confirmed. See official pricingTeam
Team
Amount not confirmed. See official pricingMinimum seats: not confirmed, so no total price is calculated.
All features7 questions, each with its source and the date we checked it
Input and output
- LanguagesLanguages it transcribes or speaks, as stated.
- Over 30 languages and variants, including English, German, Portuguese, Spanish, French and Dutch.languagetool.orgchecked 2026-10-11
- Grammar and spellingMarks grammar, spelling and punctuation mistakes and suggests fixes.
- Supportedlanguagetool.orgchecked 2026-10-11
Plan not specified
- Rewrite and change toneRewrites a sentence or paragraph, for example shorter, more formal or friendlier.
- Supportedlanguagetool.orgchecked 2026-10-11
Plan not specified
- Writes new textDrafts new text from a short instruction, not only fixes what you wrote.
- Not yet confirmed
Checking facts
- Plagiarism checkCompares your text with published sources and shows matches.
- Not yet confirmed
Workflow
- PlatformsWhere the product is offered: web, desktop app, mobile app, or editor extension.
- Web, Desktop app, Mobile apphelp.languagetool.org +1checked 2026-10-11
- Works inApps and places it works in, such as a browser extension, Word or Google Docs, as officially listed.
- Browser extension, Microsoft Word, LibreOffice, Google Docs, Gmail, Apple Mail, Thunderbirdhelp.languagetool.org +1checked 2026-10-11
Plans: Premium, Team