AI Tool

LanguageTool

Multilingual grammar and style checker.

4.3

freemiumbeginnerVerifiedSince 2003-01

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About LanguageTool

LanguageTool corrects grammar, style, and spelling in multiple languages. It offers both a free online version and a premium API for developers.

Originally a thesis project by Daniel Naber in 2003, LanguageTool has grown into a popular open-source tool. It supports over 20 languages and offers browser extensions and desktop apps.

Platforms

WebExtensionDesktopAPI

Best For

IndividualsTeamsEnterprise

Capabilities & Features

Free Tier

API Access

No Signup Required

Open Source

Customizable

File Upload

Self-Hostable

Browser Extension

Not Available

Works Offline

Multimodal

Voice Input

Image Input

Image Output

Video Input

Video Output

Audio Output

Web Search

Code Execution

Plugins

Memory

Collaboration

White Label

Ideal Use Cases

writingcontent creationproductivity

Pricing

Free TierActive

Free plan with 10,000 characters per check

Paid Plan

Premium $5.48/mo, Team $9.48/mo per user

Get Started

Pros & Cons

Supports many languages

Open-source with active community

Accurate grammar checking

Free version has character limits

Less context-aware than some AI tools

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