SiYuan

Health v2 · maintenance only

Adoption not part of the score

46723 stars · 3057 forks observed · 2026-10-12

What it is AI-extracted, prompt v1, taxonomy v1, 2026-09-28, confidence 0.97

SiYuan is an open‑source, privacy‑first knowledge workspace that stores notes as block‑level markdown and supports bidirectional linking. It can be self‑hosted or run on desktop, mobile and web via Docker, and integrates AI agents for assistance.

Use cases

• Take and organize personal notes with block‑level markdown and bidirectional links.
• Build a personal knowledge base that visualizes connections between ideas.
• Synchronize encrypted notes across multiple devices using end‑to‑end encryption.
• Leverage AI agents to generate, translate, or summarize content within the workspace.
• Create spaced‑repetition flashcards for learning and memory retention.

When to choose

• You need a self‑hosted, privacy‑focused note‑taking app with rich block editing.
• You want local‑first storage with optional encrypted cloud sync.
• You plan to integrate AI assistance directly into your knowledge workflow.
• You require cross‑platform support (desktop, mobile, Docker).

When to avoid

• You prefer a lightweight, single‑file note app without block‑level features.
• You need a fully managed SaaS solution with no self‑hosting responsibilities.
• Your workflow relies on proprietary file formats not supported by markdown.

Facets

application · maturity active

markdown file-upload backup cryptography developer-tools windows browser self-hosted local-first block-editor bidirectional-links graph-visualization fsrs-spaced-repetition open-source agpl-3.0 ai-agent knowledge-base knowledge-management ai-agents macos linux android ios docker

Member repositories

For agents

markdown · JSON · MCP: product_card(name="siyuan-note/siyuan")