LanguageTool

LanguageTool is an AI-powered grammar and style checker that identifies and corrects writing errors in over 30 languages.

LanguageTool is an AI-based writing assistant that checks grammar, punctuation, spelling, and style across more than 30 languages. Users can paste text directly into the web editor or use add-ons for browsers, word processors, and desktop applications to receive real-time corrections. It is designed for students, professionals, and anyone seeking to improve their writing clarity and professionalism. The tool features custom dictionaries, statistics to track writing habits, and a paraphrasing tool to rephrase sentences. It integrates with applications like Microsoft Word, Google Docs, LibreOffice, and various web browsers.

LanguageTool at a glance

Best for: Writer, Student, HR, Marketer
Runs on: Web, macOS, Windows, iOS, Chrome extension
Pricing: Free version; Premium version available; Team accounts available
Released: November 2003
Category: AI writing tool
Website: languagetool.org

Key features

AI-based grammar and spelling checks
Punctuation and comma correction
Style improvements and synonym suggestions
Paraphrasing tool for rephrasing sentences
Personal dictionary for custom words
Writing statistics and productivity tracking
Automatic language detection

Use it for

Checking academic papers and essays for errors
Drafting error-free emails and blog posts
Rephrasing sentences to be more formal or concise
Correcting punctuation and casing in documents

Companions

Tools that articles about LanguageTool recommend using with it, each with its job.

Claude — Drafts in your voice, section by section, before the polish.
ChatGPT — Low-cost first drafts and outlines.
Jasper — Template-driven drafts with Brand Voice.
Surfer — Scores the draft against what ranks for your keyword.
Semrush — Picks the keywords and gaps worth writing about.

Alternatives to LanguageTool

Grammarly — Personalized AI guidance and text generation on any app or website.
AiSniff — Runs locally with no server, model calls, or data leaving the browser or CLI.
editGPT — It tracks changes with AI while keeping document formatting intact.
GPTZero — Provides industry-leading detection accuracy for major AI models like ChatGPT and Gemini.
Wordtune — It offers contextual rewrite suggestions and summarizes documents, articles, and videos.
DeepL — Delivers accurate, enterprise-grade translations while preserving original layout and context.
NextAI Translator — Supports translation, polishing, and summarization across 55 languages.
STranslate — Provides concurrent translation comparisons and offline OCR capabilities.
Quillbot — It uses artificial intelligence to rewrite and paraphrase text.
Tidy — It runs entirely on-device and fixes text with a single keystroke.
iwrote — Certifies human writing with a link showing how the text was typed.
Rewrite — Free with no account, no word limit, and works completely offline.

All LanguageTool alternatives