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ObsidianRedNotebook
Free

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

 Free

The open-source software is available without a license fee. Hosting, hardware and…

Windows, macOS, Linux, Android, iOS, Browser extension Windows, Linux
  • 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
  • Supports tags, templates, images and document exports.
  • 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
  • It is a local journal rather than a collaborative workspace.
Downloadable app, Browser extension Downloadable app
Closed source Open source
License not stated License: GPL-2.0
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked September 20, 2026

Checked September 22, 2026

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