LanguageTool API

Content Optimization ยท languagetool.org verified trending

Open-source proofreading service for more than 30 languages with an accessible developer API

Specifications

Pricing
open-source
Price range
0
Billing
usage-based
License
GPL
Platform
api, web, browser-extension
Languages
en, es, fr, de, it, pl
Target user
beginner
Company size
freelancer, small-team, agency
API
Yes
Data export
Yes
Last update
2026-02-01

Tags

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