Originality.ai vs WriteHuman

QuillBot is an AI writing suite best known for its paraphrasing tool. Users paste or type text and have it rewritten in different tones and styles, while companion tools handle grammar checking, summarizing, citations, plagiarism checks and AI content detection. It is widely used by students, writers and professionals.

ZeroGPT is an AI content detection platform with a text AI detector, AI image and video detectors, AI humanizer, plagiarism checker, and a set of writing tools including paraphraser, summarizer, grammar checker, translator, and citation helper.

GPTZero is an AI detection platform for identifying machine-generated text. It combines a text detector with a Chrome extension, a plagiarism checker, writing-process verification, and educator-focused classroom tools.

HumanizeAI.pro is a free, no-signup web tool that rewrites AI-generated text so it reads more like something a person actually wrote. Paste your ChatGPT, Gemini, or Claude output, clear the captcha, and the site returns a smoother, more conversational version that keeps your keywords and meaning intact.

確率スコアと文単位シグナルを返す無料のAIチェッカー

学術校正・盗用チェック・AI ライティングツールを一つの場所に

Undetectable AI is a web platform that scans text for AI fingerprints and rewrites flagged passages so they read like natural human writing. It bundles an AI detector, an AI humanizer and a growing set of media authenticity tools in a single dashboard.

AIテキストを人間らしく整え、自然さをチェック

コンテンツ整合性のためのエンタープライズAI・盗用検出

AI生成テキストを人間らしい自然な文章に書き換える

インターネット全体を遮断せず、不適切なコンテンツをリアルタイムで除去するAIペアレンタルコントロール

AIで見守る、子どものオンライン安全を守るペアレンタルコントロール