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Nook vs Ortix: catalog facts
Nook	Ortix
Free Free and open source, supported through Open Collective.	Freemium Free download for Mac; Ortix Pro is available through a Setapp subscription.
macOS	macOS
Sidebar and spaces for organising tabs Runs both Chrome and Safari extensions	On-device AI agent with no cloud use by default Native WebKit app with Spaces and split screen
macOS only Young project, recently reached version 1.0	macOS only Pro features require Setapp
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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