Individuals and small teams use MrDoc as a private web workspace for writing, organizing, searching, and publishing documentation. Projects hold documents in multi-level hierarchies with drag ordering, tags, and templates, so a product manual, an internal wiki, and personal notes share one installation without colliding. Three editors cover different habits: Markdown with live preview, rich text for formatted pages, and spreadsheets for tabular data. Pages take images, attachments, formulas, audio and video, mind maps, flowcharts, and ECharts diagrams, which keeps runbooks expressive instead of plain text walls. History is never lost: every document keeps versions with rollback, and a recycle bin stands between a bad edit and permanent loss. Sharing stays deliberate, with projects and pages set public, private, limited to named users, or protected by an access code. Full-text search reaches across the whole library, and a tag network view shows how topics connect. Finished projects export as PDF or EPUB, single pages download as Markdown, and share codes hand read-only links to people outside the team. An AI knowledge base answers questions from your documents, AI writing tools draft and polish text in the editor, a Token API serves scripts, and browser extensions clip web pages into the library. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. GPLv3 licensed.