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AI Services for Writer that Solve "Automated Article Proofreading and Editing"

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Japanese support only

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ワードチューン

Wordtune

An AI writing assistant focused on rephrasing and paraphrasing English text. Features include tone-aware rewriting, long-form summarization, AI-generated text, grammar checking, and a Humanize function to make AI-sounding writing feel more natural. Available as a browser extension and editor integration. Primarily English-focused; Japanese writing correction and rewriting are not practically supported.

# コピーライティング# テキスト生成# 要約・翻訳# 品質向上・クリエイティブ支援

グラマリー

Grammarly

An AI writing assistant that detects and corrects English grammar, spelling, and punctuation errors in real time. Also handles tone adjustment, text rewriting, AI-powered content generation, and plagiarism and AI text detection. Available as a browser extension, desktop and mobile apps, and integrates with Microsoft Office and Google Docs. Focused on English; Japanese text proofreading is not practically supported.

# コピーライティング# テキスト生成# 業務効率化# 品質向上・クリエイティブ支援

ショドー

Shodo

A cloud-based AI proofreading and writing assistance platform specialized for Japanese. It provides real-time suggestions on sentence flow, grammatical errors, and expression improvements, helping raise the quality of business documents and content.

# テキスト生成# 要約・翻訳# 日本語対応

ディープエル

DeepL

A high-accuracy machine translation service. Its neural translation engine delivers natural-sounding translations, making it one of the world's leading translation tools alongside Google Translate. Available as a web app, desktop app, and API, with document translation and a business tier, DeepL Pro. Supports 30+ languages including Japanese.

# 要約・翻訳# テキスト生成# 業務効率化# 生産性向上# 日本語対応

ライトソニック

Writesonic

An AI writing tool specialized in generating marketing content.

# コピーライティング# SEO# テキスト生成# AIチャットボット# AIエージェント

ミストラル

Mistral

A family of open-source and proprietary large language models (LLMs) developed by French AI startup Mistral AI, along with an API platform for accessing them. Ranges from the fast and lightweight Mistral 7B and Mixtral (MoE architecture) to Codestral for coding and Mistral Reasoning for advanced reasoning tasks. Supports both self-hosting and commercial API access.

# 生成AI（LLM）# AIチャットボット# テキスト生成# 要約・翻訳# AIエージェント# 日本語対応

サーファー

Surfer

An end-to-end SEO tool for content optimization, writing, auditing, and topic cluster visualization. Compare your article against top-ranking competitor content in real time with keyword, structure, and NLP scoring. Built around Content Editor, Topical Map, and SERP Analyzer — widely used by SEO professionals.

# SEO# マーケティング# コピーライティング

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