hCaptcha vs Roundtable（Proof of Human）

免費 / 開源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.

免費 / 開源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.

精準研究受眾搭配 AI 驗證的資料品質

免費 / 開源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.

專項更強為內容完整性打造的企業級 AI 與抄襲偵測

專項更強一次掃描完成 AI 偵測、抄襲比對與內容品質評估

免費 / 開源支援句子級洞察的多語言 AI 檢測工具

免費 / 開源免費 AI 檢測器，提供逐句分析與文本人性化改寫

免費 / 開源不只給分數，還標出證據的 AI 檢測器

免費 / 開源兩分鐘，一個陌生人，一個問題：真人還是 AI？

免費 / 開源為學校、大學與團隊打造的準確抄襲與 AI 偵測

專項更強將 AI 行動分析應用於網路與雲端安全，但專為企業基礎設施設計，而非網頁表單。