Plagiarism Checker X
Text Similarity Detector
Plagiarism Checker X is a desktop plagiarism detection tool for Windows. It scans documents against billions of web pages, detects AI-generated content, compares multiple documents side by side or in bulk, checks readability, and excludes quotes and bibliographies. The software processes files locally on the user's device, so content is not uploaded to any server. It supports 250+ languages and common file formats such as Word, PDF, Excel, RTF, and plain text. A free edition with limited daily words is available, and paid licenses are one-time purchases.
12 alternatives to Plagiarism Checker X
Ranked by how well each tool replaces Plagiarism Checker X: shared features, audience, price and popularity.
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AI content detector that checks text for AI-generated writing and writing quality (the tag
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Covers 3 of 15 key features and starts cheaper.
Free plan58 out of 100 match$0.42/moOnline plagiarism and AI-generated content detection for documents.
Covers 0 of 15 key features.
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Covers 2 of 15 key features and is open source.
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