“1. Grammarly — Best all-round option”
“- Built-in plagiarism checking against websites and published works.”
“- AI detection for content generated by ChatGPT, Claude and Gemini.”
“- Authorship reports showing where text originated, including AI-assisted edits.”
“- Citation suggestions for matched passages.”
“2. Writesonic — Best integrated AI writing workflow”
“- AI content generation and editing.”
“- Plagiarism checker directly inside its AI Document Editor.”
“- Can check Chatsonic-generated responses without exporting text.”
“- Uses credits for plagiarism checks.”
“3. ProWritingAid — Best for long-form writing”
“- AI-assisted editing and rewriting.”
“- Plagiarism checking against more than a billion web pages, published works and academic papers.”
“- Highlights matching passages.”
“- Plagiarism checks require separate credits; they aren't included in regular subscriptions.”
“4. Originality.ai — Best dedicated publishing checker”
“- AI detection and plagiarism scanning.”
“- Sentence-level highlighting.”
“- Browser extension for Google Docs.”
“- Shareable reports and document-writing activity tracking.”
“5. Winston AI — Best combined screening tool”
“- AI-content detection.”
“- Plagiarism checking against web sources and document libraries.”
“- Sentence-level analysis.”
“- PDF reports and API integrations.”