Style and Grammar Checker for 25+ Languages

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• Updated Nov 12, 2026
• Java

LeanType is an Open-source keyboard, fork of HeliBoard with additional features and customisation

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• Updated Nov 12, 2026
• Kotlin

Web interface for recognizing text, proofreading OCR, and creating fully-digitized documents.

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• Updated Oct 28, 2026
• JavaScript

A fast, low-resource Natural Language Processing and Text Correction library written in Rust.

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• Updated May 23, 2023
• Rust

RedPen is an open source proofreading tool to check if your technical documents meet the writing standard. RedPen supports various markup text formats (Markdown, Textile, AsciiDoc, Re:VIEW, reStructuredText and LaTeX).

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• Updated Jul 7, 2022
• Java

Russian text quality for AI agents — neuroslop cleanup, typography, information style, editorial standards, UX writing, business correspondence. Scores text 0–10. 2,000+ linguistic atoms.

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• Updated Oct 25, 2026
• Shell

Open-source AI translation and proofreading workbench for long-form fiction and game localization. Choose all-AI, fully manual or mixed workflows, with glossary and character management, automatic format preservation, independent review, translation reuse and resumable TXT/EPUB/PDF projects.

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• Updated Nov 11, 2026
• TypeScript

Free, open-source Grammarly alternative for Chrome & Safari — AI grammar checker and text rewriter for any website, powered by your own free Google Gemini API key. No account, no tracking, no subscription.

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• Updated Nov 12, 2026
• JavaScript

Not Ai isn’t just about bypassing AI detectors. It puts good writing first, creating clear, honest prose shaped by human writing standards. It’s perfect for college and school projects, LinkedIn/X posts, emails, factual articles, personal essays, social media posts, and technical documentation, especially GitHub READMEs

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• Updated Oct 30, 2026
• Python

Claude Code plugin that applies The Economist style guide - clarity, precision, brevity. Unofficial.

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• Updated Aug 1, 2026

日本語文書の自然さと読みやすさを再現可能に診断するRust CLI / Deterministic diagnostics for natural and readable Japanese writing

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• Updated Nov 11, 2026
• Rust

Skill agen AI untuk menulis dan menyunting karya ilmiah berbahasa Indonesia yang natural, baku (EYD V, KBBI), dan jujur.

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• Updated Oct 23, 2026
• Python

GUIで動作する文書校正ツール GUI tool for textlinting.

proofreading

• Updated Oct 7, 2025
• JavaScript

66 reader-first rules for revising academic English, drawn from 60+ revision rounds of a PhD dissertation, with a 16-item quick list, a script that flags places to reread, and a Claude skill.

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• Updated Oct 29, 2026
• Python

Distributed Proofreaders is a web application intended to ease the process of converting public domain books into e-texts.

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• Updated Nov 11, 2026
• PHP

A free, open-source alternative to LanguageTool browser extension. Provides grammar, spelling, and style checking using AI models, powered by your own API keys.

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• Updated Feb 2, 2026
• TypeScript

AI-based proofreading and stylistic improvements for your writing. Changes are inserted as suggestions directly in the editor, similar to suggested changes in word processing apps.

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• Updated Nov 11, 2026
• TypeScript

Scientific writing & document integrity guard for AI-assisted research — argument economy, deterministic integrity, safe Word editing. Local · Deterministic · Zero LLM.

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• Updated Oct 5, 2026
• JavaScript

Suite per la lingua italiana e sistema avanzato anti AI, per Claude e non solo: scrittura, revisione, voce d'autore.

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• Updated Nov 9, 2026
• Python

A collection of MuseScore plugins that check species counterpoint, 4-part chorales, intervals, and chords and can automatically create interval and chord ID worksheets.

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• Updated Feb 4, 2026
• JavaScript