LanguageTool
Proofreading software
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
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€4.16 per month
Free Trial unavailable
Free version
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What is LanguageTool
LanguageTool is a proofreading and grammar-checking application that reviews text for spelling, grammar, punctuation, and style issues across multiple languages. It is used by individuals and teams to improve writing quality in emails, documents, and web-based content. The product is available as a web editor and through integrations such as browser extensions and add-ins for common writing environments, with options for self-hosting via its open-source core.
Strong multilingual coverage
LanguageTool supports a wide range of languages and variants, which is useful for international teams and multilingual content workflows. It flags grammar and style issues that are language-specific rather than relying only on generic spelling checks. This makes it a practical option for organizations that write in more than one language.
Broad integration options
The product is available via a web editor, browser extensions, and add-ins that bring proofreading into common writing contexts. This reduces the need to copy/paste text into a separate tool for review. It also offers an API for embedding checks into custom applications and editorial workflows.
Open-source core availability
LanguageTool is based on an open-source project, which can be important for transparency and deployment flexibility. Organizations with stricter data handling requirements can evaluate self-hosting approaches rather than sending text to a third-party service. The open ecosystem also enables community-driven language rules and extensions.
Quality varies by language
Accuracy and suggestion depth can differ across supported languages and dialects. Some languages may have fewer high-quality rules or less refined style guidance than others. Teams should validate performance on their primary languages and writing genres before standardizing.
Limited advanced writing features
LanguageTool focuses on proofreading and style suggestions rather than end-to-end content optimization workflows. Capabilities such as deep readability scoring, structured editorial analytics, or specialized domain writing guidance may be less comprehensive than tools built for those purposes. Users may still need complementary tools for broader content operations.
Enterprise controls depend on plan
Administrative features such as centralized policy controls, detailed auditability, and organization-wide configuration can vary by offering and deployment model. Some teams may require clearer governance features for regulated environments. Buyers should confirm data processing terms, retention behavior, and admin controls for their intended rollout.
Plan & Pricing
| Plan | Price | Key features & notes |
|---|---|---|
| Basic (Free) | €0 — Free | Basic grammar & spelling checks; free online editor; limit: ~10,000 characters per text field (free tier). Sign-up page shows free account availability. |
| Premium (Individual) | Monthly: €19.90 per month | |
| --- | --- | |
| Quarterly: €39.90 per quarter (≈€13.30/month) | ||
| Annual: €59.89 per year (≈€4.90/month) | ||
| 2-year: €99.90 per 2 years (≈€4.16/month) | Enhanced grammar, punctuation, and style checking; up to 150,000 characters per text field; unlimited AI paraphrasing; Personal Style Guide; browser & app add-ons; all prices include VAT; 14-day money-back guarantee (not a time-limited free trial). | |
| Plan | Price | Key features & notes |
| --- | --- | --- |
| Teams (2–20 users) | €56.90 per user per year | All Premium features plus user management, Team Style Guide, Team Dictionary; billed annually for up to 20 users. |
| LanguageTool for Business / Enterprise | Custom / Contact sales | Cloud and on-premise (self-hosted) options; GDPR-compliant, scalable solutions, custom/volume pricing — contact sales for quotes. |
Notes & disclaimers:
- Educational discount: LanguageTool states students/teachers/professors may receive up to 20% off Premium if they qualify.
- Some pricing pages on the public site use dynamic display; the canonical numeric prices above are taken from LanguageTool's official Help Center and site pages.
Seller details
LanguageTooler GmbH
Potsdam, Germany
Private
https://languagetool.org/
https://x.com/LanguageToolOrg
https://www.linkedin.com/company/languagetool/
