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Obsidian vs Notable: catalog facts
Obsidian	Notable
Free Free for everyone, including commercial use, in the vendor’s own words. Obsidian Sync and…	Free Free to use as freeware.
Windows, macOS, Linux, Android, iOS, Browser extension	Windows
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	Notes kept as plain GitHub Flavored Markdown Nestable tags and attachments
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	Source code of current versions is not published Development has slowed, with infrequent updates
Downloadable app, Browser extension	Downloadable app
Closed source	Closed source
License not stated	License: Freeware
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked October 2, 2026

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