Certy AI 现已正式关停，官方网站已彻底无法访问，出现连接超时与证书握手失败。
经核查 certyai.com 当前无法正常提供服务或返回服务器报错，已暂停外链直跳。
AI 内容检测器中目前正常运营的已核验工具，按近期访问量与编辑评分排序。
免费 / 开源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.
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免费 / 开源Winston AI is an AI content detection suite that identifies text and images produced by generators like ChatGPT, Gemini, and Claude. Alongside its detector it offers plagiarism checking, an AI image and deepfake detector, writing feedback, and an API for embedding detection into other platforms.
#3Certy AI 曾是一款专为分类信息平台和二手交易市场打造的 AI 驱动反欺诈与内容审核系统。它通过面部匿名化、恶意信息识别、支付风控以及自动化消息审核等功能，帮助平台拦截诈骗广告与恶意用户。
随着 Certy AI 的下线，需要内容审核与反诈保护的平台开发者可以查看页面上方的同类安全与审核 AI 工具获取平替方案。
免费 / 开源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.
免费 / 开源Winston AI is an AI content detection suite that identifies text and images produced by generators like ChatGPT, Gemini, and Claude. Alongside its detector it offers plagiarism checking, an AI image and deepfake detector, writing feedback, and an API for embedding detection into other platforms.
免费 / 开源一次扫描完成 AI 检测、查重与内容质量评估
