PreTeXt is an open source authoring and publishing platform designed to meet the needs of authors who want to write high-quality, professional-grade textbooks. PreTeXt provides a comprehensive set of tools and features to help authors create and manage their content, including a WYSIWYG editor, a structured content format, and an extensive set of templates and themes. PreTeXt also supports collaborative editing, allowing authors to work together and share feedback on their work. With PreTeXt, authors can easily create beautifully designed textbooks and other publications that are optimized for both print and digital formats. Authors can also publish their work in a variety of formats, including HTML, PDF, and EPUB, and can easily export content for use in other systems. PreTeXt is a powerful and reliable platform for authors who want to create professional-grade textbooks that stand out from the crowd.