siyuan
The open-source alternative toNotion
40.3k
|AGPL-3.0🧐 What is siyuan?
SiYuan is a powerful knowledge management tool that supports block-level editing and bidirectional linking for building a 'second brain.' It focuses on data privacy by keeping all content local while offering robust sync options.
💡 Bottom Line: Use this if you wantresearchers and power users of pkm.but hate paying monthly subscriptions.
Best Used For
🚀
Building a second brain🛡️
Academic research💰
Complex project documentationProject Vitality
Tech StackTypeScript
Last Update
1/6/2026
Community Forks2,507
Open Issues451
LicenseAGPL-3.0
Best For
Researchers and power users of PKM.
☁️
Deploy in Seconds
Don't struggle with localhost. Host siyuan on a fast cloud server.
Get $200 Free CreditNew users only • DigitalOcean
Key Pros
- • Block-based editing
- • Bidirectional links
- • Offline functionality
Challenges
- • Steep learning curve
- • Mobile app is less polished
- • Sync setup requires effort
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Self-Hosted
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