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MarkorObsidian
Free

Free and open source.

 Free

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

Android Windows, macOS, Linux, Android, iOS, Browser extension
  • Edits Markdown, todo.txt and Zim files directly
  • Simple and lightweight
  • 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
  • Android only
  • No built-in sync service
  • 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 Downloadable app, Browser extension
Open source Closed source
License not stated License not stated
No 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.