Best LanguageTool Alternatives in 2025

Looking for alternatives to LanguageTool? In this comparison, we take a closer look at LanguageTool alongside similar software solutions including LanguageTool, Grammarly and Duden Korrektor.

Our detailed comparison table highlights key features, pricing, and performance of these leading solutions, empowering you to make an informed decision. Whether you're seeking robust functionality, user-friendly design, or cost-effective alternatives, explore how LanguageTool, Grammarly and Duden Korrektor stack up to find the perfect software for your goals.

	Supported Languages	Platform Availability	Core Features	Pricing and Licensing	Integration and Compatibility
LanguageTool	More than 20 languages including English and Portuguese.	Browsers, desktop version, Google Docs, Microsoft Word, various platforms.	Grammar and punctuation checking, style suggestions, bias language detection, basic to more advanced functionalities in premium version.	Free and premium versions available; open-source software.	Integrates with browsers, Google Docs, Microsoft Word; requires internet connection for online usage; has add-ons.
Grammarly	Multiple languages including English and Spanish.	Browsers, desktop app, Google Docs, Microsoft Office applications, mobile devices.	Comprehensive grammar checking, punctuation checks, vocabulary enhancement, plagiarism detection, genre-specific style checks, tone adjustments.	Free and premium versions available with limitations in free version.	Works on web browsers, desktop apps, Microsoft Office; offers browser extensions; supports multiple platforms including mobile devices.
Duden Korrektor	German language only.	Windows (64-bit), Mac OS; supports Microsoft Office and non-Microsoft Office applications including Outlook and Thunderbird.	Comprehensive German spell checking and grammar checking, style checking, large German dictionary integration, context-based corrections.	Commercial software with relatively high price; trial version available.	Integrates with Microsoft Office applications and other text editing software including email clients like Outlook and Thunderbird.

Supported Languages

LanguageTool	More than 20 languages including English and Portuguese.
Grammarly	Multiple languages including English and Spanish.
Duden Korrektor	German language only.

Platform Availability

LanguageTool	Browsers, desktop version, Google Docs, Microsoft Word, various platforms.
Grammarly	Browsers, desktop app, Google Docs, Microsoft Office applications, mobile devices.
Duden Korrektor	Windows (64-bit), Mac OS; supports Microsoft Office and non-Microsoft Office applications including Outlook and Thunderbird.

Core Features

LanguageTool	Grammar and punctuation checking, style suggestions, bias language detection, basic to more advanced functionalities in premium version.
Grammarly	Comprehensive grammar checking, punctuation checks, vocabulary enhancement, plagiarism detection, genre-specific style checks, tone adjustments.
Duden Korrektor	Comprehensive German spell checking and grammar checking, style checking, large German dictionary integration, context-based corrections.

Pricing and Licensing

LanguageTool	Free and premium versions available; open-source software.
Grammarly	Free and premium versions available with limitations in free version.
Duden Korrektor	Commercial software with relatively high price; trial version available.

Integration and Compatibility

LanguageTool	Integrates with browsers, Google Docs, Microsoft Word; requires internet connection for online usage; has add-ons.
Grammarly	Works on web browsers, desktop apps, Microsoft Office; offers browser extensions; supports multiple platforms including mobile devices.
Duden Korrektor	Integrates with Microsoft Office applications and other text editing software including email clients like Outlook and Thunderbird.

Choosing the right software isn’t just about features. Size, license type, user ratings, and popularity also matter.

This quick comparison shows how LanguageTool stacks up against LanguageTool, Grammarly and Duden Korrektor in these key areas—helping you find the best alternative for your needs.

	Size	License	Popularity
LanguageTool	111.7MB	Freeware	0%
Grammarly		Freeware	0%
Duden Korrektor		Commercial	100%

Size

LanguageTool	111.7MB
Grammarly
Duden Korrektor

License

LanguageTool	Freeware
Grammarly	Freeware
Duden Korrektor	Commercial

Rating

LanguageTool
Grammarly
Duden Korrektor

Popularity

LanguageTool	0%
Grammarly	0%
Duden Korrektor	100%