SiYuan

SiYuan is a privacy-first, self-hosted personal knowledge management system with over 41,000 GitHub stars. Written in TypeScript and Go, it provides a powerful block-level WYSIWYG Markdown editor with two-way linking capabilities, making it a compelling alternative to tools like Notion, Obsidian, and Roam Research. SiYuan is designed for users who want full control over their data while enjoying a modern, feature-rich note-taking experience.

Common Use Cases

Researchers and academics use SiYuan to organize literature notes, build interconnected knowledge graphs, and leverage spaced repetition flashcards for learning. Software developers rely on it for technical documentation, code snippet management, and project wikis with block-level references that keep information contextually linked. Students use SiYuan as a comprehensive study tool, combining note-taking with flashcard review and PDF annotation. Knowledge workers and writers build personal wikis and second brains, connecting ideas across hundreds of documents with bidirectional links and SQL-powered queries.

Key Features

• Block-level WYSIWYG Markdown editor with two-way linking
• Fine-grained block references and backlinks for knowledge graphs
• Support for documents exceeding one million words
• Built-in flashcard spaced repetition system
• AI writing assistance with OpenAI integration
• Mathematical formulas, charts, flowcharts, and Gantt charts
• PDF annotation and web clipping
• SQL query embedding for advanced data retrieval
• Community marketplace for plugins and themes
• Multi-device sync and access via web browser

Why deploy SiYuan on Hostinger VPS

Deploying SiYuan on a Hostinger VPS gives you a private, always-accessible knowledge base without relying on third-party cloud services. Your notes, documents, and personal data remain entirely under your control on your own server. With dedicated VPS resources, SiYuan handles large workspaces with thousands of documents and complex block references without performance degradation. Hostinger VPS provides the reliable uptime needed to access your knowledge base from any device, anywhere, while the lightweight Docker deployment keeps resource usage efficient and maintenance simple.