languagetool-org/languagetool
Style and Grammar Checker for 25+ Languages
This tool helps writers, editors, and anyone crafting text in multiple languages catch grammar and style errors that a basic spell checker would miss. You input text in one of 25+ supported languages, and it identifies sophisticated mistakes, offering suggestions for improvement. It's perfect for anyone who needs to ensure their writing is clear, correct, and professional, whether for academic papers, business communications, or creative writing.
14,182 stars. Actively maintained with 159 commits in the last 30 days.
Use this if you need advanced grammar and style checking beyond simple spelling, especially across multiple languages like English, Spanish, French, or German.
Not ideal if you only need basic spell-checking or are working with highly specialized jargon not typically covered by general grammar rules.
Stars
14,182
Forks
1,490
Language
Java
License
LGPL-2.1
Category
Last pushed
Mar 18, 2026
Commits (30d)
159
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