StyleVision is a software tool developed by Altova that allows users to create and design visually appealing stylesheets for XML documents. It enables users to transform XML data into various formats, including HTML, PDF, and Word, making it easier to present and share information. With its user-friendly interface, StyleVision supports drag-and-drop functionality, allowing users to design templates without extensive coding knowledge. It also integrates with other Altova products, enhancing its capabilities for data integration and management, making it a valuable tool for developers and content creators alike.