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SupernotesObsidian
Freemium

Free to start, with paid plans for more features.

 Free

Free for everyone, including commercial use, in the vendor’s own words. Obsidian Sync and…

iOS, Web Windows, macOS, Linux, Android, iOS, Browser extension
  • Notecard format with Markdown and LaTeX
  • Linked cards with a 2D or 3D graph view
  • Notes are plain Markdown files in a folder you control, readable without the app
  • Linking, backlinks, tags, graph view and fast search across the vault
  • Requires an account and cloud service
  • Some features, including AI, need a paid plan
  • The application is not open source, only the plugin ecosystem and the releases repository
  • Syncing between devices means paying for Obsidian Sync or wiring up your own sync tool
Downloadable app, Web application, Hosted service Downloadable app, Browser extension
Closed source Closed source
License not stated License not stated
Account needed No account needed
Not stated if it works offline Works offline

Checked September 23, 2026

Checked September 20, 2026

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