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ObsidianTriliumNext Notes
Free

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

 Free

Free and open source under the AGPL 3.0.

Windows, macOS, Linux, Android, iOS, Browser extension Windows, macOS, Linux, Web, Self-hosted
  • 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
  • Cloning puts one note in several places without copying it
  • Rich text, code notes, canvases, Mermaid diagrams and relation maps
  • 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
  • Notes live in a database, not plain files, so lock-in is real
  • The interface is dense and takes a while to get comfortable with
Downloadable app, Browser extension Downloadable app, Self-hosted
Closed source Open source
License not stated License: AGPL-3.0
No account needed No account needed
Works offline Works offline

Checked September 20, 2026

Checked September 21, 2026

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