LanguageTool
AI-based grammar checker for 30+ languages with style and tone suggestions
LanguageTool is the strongest pick for multilingual writers and privacy-focused users. Its free tier is genuinely useful, and Premium costs less than Grammarly's equivalent tier. The deep integration with LibreOffice and native apps is a differentiator for open-source and Mac users. If you primarily write in English and want highly polished tone suggestions, Grammarly is a better fit.
Verified 2h ago · liveness 73/100 · cite: rightaichoice.com/tools/languagetool
- Non-native English speakers
- Students and academics
- Multilingual business teams
- Privacy-conscious users
- Users needing offline grammar checking
- Creative writers seeking deep stylistic analysis
- English-only users who prefer Grammarly's tone suggestions
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Skip LanguageTool if you need offline grammar checking, or if you're an English-only writer who prioritizes deep tone and style suggestions over multilingual support and privacy.
The free version only offers limited paraphrasing, pushing you to Premium for unlimited use.
LanguageTool's pricing fits individuals and small teams who write in multiple languages, offering a cheaper alternative to Grammarly's Premium ($12/mo annual) with more language coverage. For English-only users, Grammarly's tone analysis may justify its higher cost, but LanguageTool's free tier is more generous. Teams start at $7.99/user/mo annually, cheaper than Grammarly Business ($15/user/mo).
In short
LanguageTool — AI-based grammar checker for 30+ languages with style and tone suggestions. Best for Non-native English speakers, Students and academics, Multilingual business teams. Free to start; paid plans from $7.49179/mo.
What people actually say about LanguageTool — is it worth it?
We ran a structured research pass across product reviews, community discussions, and post-purchase forum threads to surface the patterns vendors won't publish themselves. Below: the recurring strengths, the hidden costs people mention most, and the cohort that consistently regrets adopting this tool.
87 mentions across 7 sources (Reddit, Hacker News, YouTube, Product Hunt, App Store, GitHub, Lemmy) · researched Jul 2, 2026.
- +Supports grammar checking in 30+ languages, rare among competitors.
- +Open-source core allows self-hosting and community auditing.
- +Strong privacy: no text stored by browser add-on, GDPR-compliant.
- +Effective IDE and Vim integration via plugins like ALE.
- +Picky Mode catches subtle stylistic issues beyond basic grammar.
- −Browser extension now requires a Premium subscription.
- −LibreOffice add-on has severe memory leak issues.
- −Support responsiveness has declined over time.
- −Setup can be bureaucratic, especially with Overleaf and Safari.
- −False positives and missing suggestions in some languages.
- • Browser extension now requires Premium; free users lose that key feature.
- • Premium pricing jumped to $75/mo for some users, then lowered; volatility concerns.
- • Self-hosting requires technical know-how and server resources.
In users’ own words
“Hello. I’m a big fan and user of LanguageTool and am happy with the new macOS app/system support. Are there plans to make it available for the iWork suite (Pages, Numbers & Keynote)? I’d be really happy to break free of Word!”
“Hello. I have successfully installed/configured LanguageTool as a server and start using it with Firefox plugin. The symbols in the right down box are very useful also for checking if it's working... and in this case it's working fine. Unfortunately I can't say the same for the Collabora online and Libre Office 7.4 case. I have the last version installed/configured but I can't even know if it's working since…”
“​ https://preview.redd.it/o9ckoypnshi91.png?width=3456&format=png&auto=webp&s=ef7beac8dc367330fd7a89ed08a626a9003f7cd8”
Real posts from independent users, linked to the source — not testimonials we collected.
Viability Score
How well maintained and how widely used is LanguageTool? Built from what the vendor actually publishes (docs, changelog, tutorials, integrations, pricing), whether the site is live, and how much real users discuss it. How we calculate this
Last calculated: August 2026
How we score →Key Features
- Grammar and spell check in 30+ languages
- Style and tone suggestions
- AI-powered paraphrasing
- Picky Mode for advanced punctuation and typography
- Personal dictionary
- Team dictionary and style guide
- Statistics tracking for productivity and errors
- Browser add-ons for Chrome, Firefox, Edge, Safari, Opera
- Email add-ons for Gmail, Outlook, Apple Mail, Thunderbird
- Office plugins for Google Docs, Word, Apple Pages, LibreOffice
- Desktop apps for macOS and Windows
- Up to 150,000 characters per text (Premium)
- 20,000+ advanced checks for select languages (Premium)
- Open-source core
- GDPR-compliant, no text stored by browser add-on
About LanguageTool
LanguageTool is an AI-based writing assistant that checks grammar, spelling, punctuation, and style in over 30 languages and dialects. It's designed for non-native speakers, students, and professionals who write in multiple languages, helping them avoid embarrassing mistakes and sound more professional. The free version covers basic spelling and grammar, while Premium unlocks more than 20,000 additional checks for select languages, unlimited AI paraphrasing, a style guide, and up to 150,000 characters per check. LanguageTool is GDPR-compliant and privacy-focused: the browser add-on stores no text on its servers. Integrations include Chrome, Firefox, Edge, Safari, Opera, Gmail, Outlook, Apple Mail, Thunderbird, Google Docs, Word, Apple Pages, LibreOffice, Slack, and Notes. It also offers desktop apps for macOS and Windows, supporting apps like Wordpad, Notepad, Pages, Mail, Slack, Word, Notes, and Messages. For privacy-conscious users and multilingual teams, LanguageTool offers strong value at a lower price than Grammarly, though English-only users may prefer Grammarly's more polished tone analysis.
Behind the Verdict
LanguageTool stands out for its broad language support, checking text in over 30 languages and dialects, which is rare among grammar checkers. It's particularly valuable for non-native speakers and multilingual teams who need consistent checking across languages. The free tier offers basic grammar and spell checking, which is more generous than many competitors. Privacy is a major strength: the browser add-on explicitly states that no text is stored on its servers, and the tool is GDPR-compliant, making it a good choice for privacy-sensitive users. The free tier also includes a personal dictionary and punctuation fixes. However, LanguageTool's AI paraphrasing, a key premium feature, is less polished than dedicated paraphrasing tools. The 20,000+ advanced checks are only available for select languages (English, German, French, Spanish, Dutch, Polish, Portuguese), so users of less common languages won't get the full benefit. There's no offline mode; an internet connection is required. For English-only users who want deep stylistic and tone analysis, Grammarly offers more refined suggestions, but at a higher price. LanguageTool is also a good fit for open-source and LibreOffice users, a niche Grammarly doesn't serve well. For teams, the Teams plan includes a shared style guide and team dictionary, which helps maintain a consistent brand voice. The Business plan adds SSO and API access, but only via contact sales. Small teams and individual professionals will find the self-serve tiers sufficient. Overall, LanguageTool is a pragmatic choice for multilingual and privacy-conscious writers, offering solid core features at a competitive price. It's not the most sophisticated for English tone analysis, but it's reliable and affordable.
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Real-world workflow fit
Concrete scenarios for the personas LanguageTool actually fits — and what changes day-one when you adopt it.
A freelance writer who writes in English and German needs to check grammar and style in both languages across different platforms.
Outcome: Uses LanguageTool's browser add-on to check emails and blog posts in Gmail and WordPress, plus the desktop app for Word, getting instant corrections and paraphrasing suggestions in both languages, reducing errors and improving clarity.
A marketing team of 5 needs to maintain consistent brand voice in customer communications and documents.
Outcome: Adopts the Teams plan, creates a shared style guide and team dictionary to enforce terminology, and integrates with Google Docs and Slack to check writing before publishing, ensuring consistent messaging across the team.
An international student writing essays in English wants to improve grammar and avoid common mistakes.
Outcome: Uses the free version for basic checks, then upgrades to Premium for advanced checks and paraphrasing to sound more academic, and uses the statistics feature to track recurring errors and improve writing over time.
Use Cases
- Checking grammar and spelling in emails before sending
- Improving style and tone of blog posts and articles
- Paraphrasing sentences to make them more formal or fluid
- Maintaining consistent brand voice across team documents
- Learning from mistakes with statistics and personalized dictionary
- Writing academic papers or dissertations with proper punctuation and style
- Checking short forms and tweets on the web via browser add-on
Limitations
- LanguageTool requires an internet connection; there is no offline mode.
- The free version has limited paraphrasing and fewer checks.
- Premium adds 20,000+ advanced checks only for select languages (English, German, French, Spanish, Dutch, Polish, Portuguese).
- The AI paraphrasing can occasionally be inconsistent.
- The style guide and team dictionary are only available in Premium/Teams plans.
- Large enterprises need to contact sales for SSO and advanced admin, as these are not on the self-serve tiers.
as of 2026-08-24
Verification history
We have re-verified LanguageTool 6 times since . Each pass re-reads the vendor's own pages and re-checks every listed field against that evidence; passes where nothing had changed are marked as such.
- — re-checked, vendor evidence unchanged
- — re-checked, vendor evidence unchanged
- — re-checked, vendor evidence unchanged
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
Free to cite with attribution — this page re-verifies continuously.
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
Plans compared
For each published LanguageTool tier: who it actually fits, and what it adds vs. the previous tier. Cross-reference the cost calculator above for projected annual outlay.
Free
$0/mo
Ideal for
Casual writers, students, or anyone who needs basic grammar and spelling checks in multiple languages without cost, and values privacy since no text is stored by the browser add-on.
What this tier adds
Free entry point with basic spelling and grammar, limited paraphrasing, and browser/office add-ons; no advanced style checks or unlimited paraphrasing.
Premium Monthly
$19.90/mo
Ideal for
Individuals who need advanced grammar, style, and unlimited paraphrasing on a short-term basis, such as freelancers or students with a project deadline.
What this tier adds
Adds 20,000+ advanced checks for select languages, unlimited AI paraphrasing, style guide, Picky Mode, and up to 150,000 characters per text, but billed monthly at the highest rate.
Premium Quarterly
$14.90/mo (billed $44.70/quarter)
Ideal for
Writers who need Premium features but prefer a shorter commitment than a year, with some savings over monthly billing.
What this tier adds
Same features as Premium Monthly but billed quarterly at $14.90/mo, saving on the monthly rate.
Premium Annual
$9.90/mo (billed $118.80/year)
Ideal for
Long-term individual users, such as bloggers, academics, or professionals who write frequently and want the most popular pricing plan with the best value.
What this tier adds
Billed annually at $9.90/mo, offering a significant discount over monthly and quarterly, and includes all Premium features.
Premium 2-Year
$7.49/mo (billed $179.76/2 years)
Ideal for
Committed users who want the lowest per-month cost and are willing to pay two years upfront, such as professional writers or non-native speakers who rely on daily checking.
What this tier adds
Lowest per-month price at $7.49/mo, billed every two years, with all Premium features included.
Teams
$7.99/mo per user (billed annually, min 2 users)
Ideal for
Small to medium teams (min 2 users) that need consistent brand voice, shared style guide, and team dictionary, with admin management.
What this tier adds
Adds user management, team style guide, and team dictionary to all Premium features, priced per user annually at $7.99/mo.
Business
Contact sales
Ideal for
Enterprises and larger organizations that require SSO, API access, admin controls, and dedicated support for company-wide writing standards.
What this tier adds
Adds SSO, API access, admin controls, and dedicated support; custom pricing via contact sales, not self-serve.
Where the pricing makes sense
The company stage and team size where LanguageTool's pricing actually pencils out — and where peers do it cheaper.
LanguageTool's pricing fits individuals and small teams who write in multiple languages, offering a cheaper alternative to Grammarly's Premium ($12/mo annual) with more language coverage. For English-only users, Grammarly's tone analysis may justify its higher cost, but LanguageTool's free tier is more generous. Teams start at $7.99/user/mo annually, cheaper than Grammarly Business ($15/user/mo).
Setup time & first value
How long it actually takes to get something useful out of LanguageTool — broken out by persona, not the marketing-page minute.
For an individual: install the browser add-on and sign up in under 5 minutes; basic checks work immediately. For a team: set up the Teams plan, invite members, and configure the style guide in about 15 minutes. Desktop app installation takes a few minutes; add-ons for Office may require a quick setup.
Switching to or from LanguageTool
How to bring data in from common predecessors and how to get it back out — written for the switcher, not the buyer.
- →From Grammarly: export your personal dictionary (if any) and manually add terms to LanguageTool's dictionary; switch browser add-ons and start using the free tier.
- →From Microsoft Editor: install LanguageTool add-ons for Word and browser, and adjust to its style suggestions.
- →From a custom script: use the free tier to check texts manually via the web editor, or integrate the API if you have a Business plan.
- ↗To Grammarly: export your personal dictionary terms and re-add them; cancel your LanguageTool subscription and install Grammarly's browser add-ons.
- ↗To ProWritingAid: if you need deeper style analysis for English, you can export your texts and paste them into ProWritingAid; cancel your LanguageTool subscription.
- ↗To Microsoft Editor: if you use Office apps, you can switch to the built-in editor; migrate your personal dictionary manually.
Integrations
Resources & Guides
Tutorials & Learning
Official links
Tools that pair well with LanguageTool
Common stack mates teams adopt alongside LanguageTool, with the specific reason each pairing earns its keep.
Featured Head-to-Head Comparisons
Languagetool vs Gem
Choose Gem if you're a recruiter consolidating ATS, CRM, and AI automation to hire faster. Choose LanguageTool if you're an individual or team needing affordable multilingual grammar and style checking. They serve completely different needs.
Languagetool vs Letterhead
If you’re an individual focused on writing quality across languages, LanguageTool is the clear choice with its affordable premium and extensive integrations. For teams managing multiple newsletters at scale, Letterhead’s AI agents and portfolio analytics deliver production efficiency, but require a sales call and enterprise budget.
Languagetool vs Poke Interaction Co
Choose LanguageTool if you need a robust, multilingual grammar and style checker for your writing across apps and documents. Choose Poke if you want an AI assistant to manage email, calendar, and tasks directly from your messaging apps—especially valuable if you use Apple Messages, WhatsApp, or Telegram and want proactive automations.
Languagetool vs Starwriter Ai
If you write in multiple languages and need a privacy-respecting grammar checker that works everywhere, LanguageTool is the clear choice. But if your sole goal is to make AI-generated text undetectable by Turnitin or GPTZero, StarWriter AI is purpose-built for that task. Choose based on your primary need: correction vs. concealment.
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