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NotionSiYuan
Freemium

Free tier for individuals; paid plans add team features and higher limits.

 Freemium

Most features are free, including for commercial use. The official cloud sync and assets…

Windows, macOS, Android, iOS, Web Windows, macOS, Linux, Android, iOS, Self-hosted
  • Highly flexible structure covers notes, databases, and project boards in one app
  • Real-time collaboration for team use
  • Block-level references and two-way links with custom attributes
  • SQL queries embedded inside notes for building your own views
  • Flexibility comes with a learning curve to set up well
  • Can feel heavier and slower than single-purpose notes apps
  • Notes live in the app's own store rather than plain files in a folder
  • The interface has a lot of concepts to learn at once
Downloadable app, Web application Downloadable app, Self-hosted
Closed source Open source
License not stated License: AGPL-3.0
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 22, 2026

Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.