RewriteGuru is an AI-powered article rewriter tool that helps users rewrite text and generate unique content. It offers five rewriting modes: AI Rewriter, Creative, Fluent, Standard, and Sentence Rephraser. The tool supports multiple languages and includes features like deep spinning, grammar checking, plagiarism checking, and spell checking. It is free to use with a word limit of 800 words per search, and a Pro version is available for unlimited words and additional features. The tool aims to provide high-quality, plagiarism-free rewritten content quickly and securely.