Refactor Your Thinking 中文 | 日本語 ## Table of Contents * [💡 Introduction](#-introduction) * [🔮 Features](#-features) * [🏗️ Architecture and Ecosystem](#-architecture-and-ecosystem) * [🌟 Star History](#-star-history) * [🗺️ Roadmap](#️-roadmap) * [🚀 Download Setup](#-download-setup) * [App Market](#app-market) * [Installation Package](#installation-package) * [Docker Hosting](#docker-hosting) * [Unraid Hosting](#unraid-hosting) * [Insider Preview](#insider-preview) * [🏘️ Community](#️-community) * [🛠️ Development Guide](#️-development-guide) * [❓ FAQ](#-faq) * [How does SiYuan store data?](#how-does-siyuan-store-data) * [Does it support data synchronization through a third-party sync disk?](#does-it-support-data-synchronization-through-a-third-party-sync-disk) * [Is SiYuan open source?](#is-siyuan-open-source) * [How to upgrade to a new version?](#how-to-upgrade-to-a-new-version) * [What if some blocks (such as paragraph blocks in list items) cannot find the block icon?](#what-if-some-blocks-such-as-paragraph-blocks-in-list-items-cannot-find-the-block-icon) * [What should I do if the data repo key is lost?](#what-should-i-do-if-the-data-repo-key-is-lost) * [Do I need to pay for it?](#do-i-need-to-pay-for-it) * [🙏 Acknowledgement](#-acknowledgement) * [Contributors](#contributors) ## 💡 Introduction SiYuan is a privacy-first personal knowledge management system, support fine-grained block-level reference and Markdown WYSIWYG. Welcome to [SiYuan English Discussion Forum](https://liuyun.io) to learn more.   ## 🔮 Features Most features are free, even for commercial use. * Content block * Block-level reference and two-way links * Custom attributes * SQL query embed * Protocol `siyuan://` * Editor * Block-style * Markdown WYSIWYG * List outline * Block zoom-in * Million-word large document editing * Mathematical formulas, charts, flowcharts, Gantt charts, timing charts, staffs, etc. * Web clipping * PDF Annotation link * Export * Block ref and embed * Standard Markdown with assets * PDF, Word and HTML * Copy to WeChat MP, Zhihu and Yuque * Database * Table view * Flashcard spaced repetition * AI writing and Q/A chat via OpenAI API * Tesseract OCR * Multi-tab, drag and drop to split screen * Template snippet * JavaScript/CSS snippet * Android/iOS/HarmonyOS App * Docker deployment * [API](https://github.com/siyuan-note/siyuan/blob/master/API.md) * Community marketplace Some features are only available to paid members, for more details please refer to [Pricing](https://b3log.org/siyuan/en/pricing.html). ## 🏗️ Architecture and Ecosystem  | Project | Description | Forks | Stars | |-|--||--| | [lute](https://github.com/88250/lute) | Editor engine | 