Copyscape is a plagiarism detection tool that can help identify duplicate content across the web. While it's not specifically designed to detect AI-generated content, it can be useful for identifying instances where content has been copied or closely paraphrased from other sources, including autogenerated content.
Grammarly Premium offers advanced grammar and plagiarism checking features that can help detect instances of poorly written or plagiarized content.
Quetext is a plagiarism detection tool that uses advanced algorithms to identify plagiarized content.
MarketMuse offers an AI Content Checker tool that analyzes content for relevance, originality, and quality.
WriteSonic is an AI-powered copywriting tool that generates content based on user inputs and prompts.