SiYuan for Windows

Quick summary

SiYuan is a desktop knowledge manager for Windows that focuses on private, local-first note keeping. It provides a variety of tools to help you reshape and connect ideas, while keeping your data encrypted and stored on your own machine.

Main capabilities

• Bidirectional linking between notes and fragments to make relationships explicit and navigable.
• Fine-grained, atomic block references so individual pieces of content can be cited and reused.
• Hierarchical outlines for organizing information in nested, collapsible trees.
• A palette of built-in content blocks and elements to assemble flexible documents and views.

Organization and workflow options

• Structured outlines let you build large, multi-level maps of your thoughts and projects.
• Modular built-in elements (tables, code blocks, embeds, etc.) speed up composition and layout.
• Linked notes and two-way links reveal connections across your vault, helping surface context.
• Reusable block references make it easy to maintain a single source of truth for recurring content.

Privacy, storage, and synchronization

SiYuan emphasizes user control over data: everything can be kept on the local device and protected with end-to-end encryption during sync. That local-first approach reduces exposure to third-party servers and gives you direct access to your files if needed. When synchronization is used, it is designed to preserve confidentiality so only you can decrypt the stored information.

Why it helps thinking

By combining link-based navigation, atomized content blocks, and outline structures, SiYuan encourages iterative refactoring of knowledge. The result is a flexible, discoverable knowledge base that makes it easier to capture fleeting ideas, connect concepts, and develop coherent thinking over time.