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Head-to-head · Grammar Checkers

LanguageTool vs Microsoft Editor

  • Updated Oct 2026
  • Both researched from official sources
  • 7 checks side by side
Higher score LanguageTool #2 in Grammar Checkers 9.2/10 Free plan Free plan✓ 5 of 5 features Visit LanguageTool
Microsoft Editor #3 in Grammar Checkers 9.0/10 Free plan Free plan✓ 3 of 5 features Try Microsoft Editor

LanguageTool leads on 2 checks, Microsoft Editor on 0, and 5 are even. Who comes out ahead on the 7 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreLanguageTool · 9.2/10
  • Free planboth
  • Most featuresLanguageTool · 5 of 5

LanguageTool scores higher on our rubric for grammar checkers: 9.2 against 9.0 out of 10; our editors rank them #2 and #3.

LanguageTool offers desktop app; Microsoft Editor doesn't. LanguageTool leads on languages supported: 31 versus 23.

LanguageTool is the better fit for multilingual users and self-hosted deployments. Microsoft Editor is the better fit for microsoft 365 users wanting integrated checking.

  • LanguageTool fits best

    Multilingual users and self-hosted deployments

  • Microsoft Editor fits best

    Microsoft 365 users wanting integrated checking

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Side by side

Feature LanguageTool 9.2/10 Visit ↗ Microsoft Editor 9.0/10 Visit ↗
At a glance
Editor score 9.2 9.0
Ranking #2 in Grammar Checkers #3 in Grammar Checkers
Best for Multilingual users and self-hosted deployments Microsoft 365 users wanting integrated checking
Pricing model Free plan + paid Free plan + paid
Starting price — —
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Self-hosted, Desktop, Mobile, Browser extension Cloud, Desktop, Mobile, Browser extension
Platforms Web, Windows, macOS, iOS, Chrome extension Web, Windows, macOS, iOS, Android, Chrome extension
Support Email, Live chat, Docs Docs
Integrations 11 integrations 7 integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features LanguageTool 5/5 · Microsoft Editor 3/5
Browser extension ✓ ✓
Desktop app ✓ (best) —
Mobile app ✓ ✓
Style suggestions ✓ ✓
Tone detection ✓ (best) Not checked yet
Specs
Languages supported 31 (best) 23
Our review
Pros
  • Supports grammar, punctuation, style, and paraphrasing in 31 languages
  • Works across web, desktop, mobile, office apps, browsers, and APIs
  • Open-source core with a self-hosted LanguageTool server option
  • Checks spelling, grammar, punctuation, capitalization, and style
  • Adds clarity, concision, formality, vocabulary, and readability suggestions
  • Integrates directly with Word, Outlook, and Microsoft Edge
Cons
  • Premium Monthly costs €19.90 per user per month
  • Team pricing is limited to up to 20 users
  • Advanced features are concentrated in paid plans
  • Premium features require a Microsoft 365 subscription
  • Integration coverage centers on Microsoft products
  • Standalone Editor browser extensions were retired in 2025
Our verdict

LanguageTool is a multilingual writing assistant for individuals, professionals, teams, and developers. It checks grammar, spelling, punctuation, and style through a web editor, browser extensions, desktop applications, mobile software,…

Read the review →

Microsoft Editor is a writing assistant for spelling, grammar, punctuation, capitalization, and style. It is designed for people who write in Microsoft Word, Outlook, Word for the web, and Microsoft Edge, especially Microsoft 365 users who…

Read the review →
  1. LanguageToolGrammar Checkers 9.2Free plan
  2. Microsoft EditorGrammar Checkers 9.0Free plan

Strengths and trade-offs

  • LanguageTool — where it wins

    • Supports grammar, punctuation, style, and paraphrasing in 31 languages
    • Works across web, desktop, mobile, office apps, browsers, and APIs
    • Open-source core with a self-hosted LanguageTool server option

    Where it doesn't

    • Premium Monthly costs €19.90 per user per month
    • Team pricing is limited to up to 20 users
    • Advanced features are concentrated in paid plans

  • Microsoft Editor — where it wins

    • Checks spelling, grammar, punctuation, capitalization, and style
    • Adds clarity, concision, formality, vocabulary, and readability suggestions
    • Integrates directly with Word, Outlook, and Microsoft Edge

    Where it doesn't

    • Premium features require a Microsoft 365 subscription
    • Integration coverage centers on Microsoft products
    • Standalone Editor browser extensions were retired in 2025

More comparisons

All grammar checkers comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update