Documentation deserves better than a database nobody wants to maintain. Typemill is an open-source flat-file CMS for informational websites, manuals, knowledge bases, and handbooks: content lives as Markdown files in folders, so a site can be copied, versioned, backed up, and moved with ordinary file tools and no database server anywhere in the stack. Authors get a visual block editor for nontechnical writing and a raw Markdown editor when precision matters, with a navigation tree, drag-and-drop structure, media library, page metadata, and publish states in one workspace. The same source then publishes three ways: as a themed website, as a printable PDF manual, or as an EPUB eBook through the eBook studio, making single-source publishing real for teams tired of maintaining docs, PDFs, and handbooks as three diverging copies. Themes are built from HTML and Twig; plugins add search, analytics, diagrams, math, and integrations; and an optional AI assistant interface connects writing help to the editor. User management, restricted pages, redirects, and a REST API cover the operational side, and the whole application is small enough to run comfortably on modest shared-style hosting or a tiny server while still feeling instant. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.