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SideNotes vs Unclutter: catalog facts
SideNotes	Unclutter
Paid Commercial Mac app from Apptorium; check the developer's site for current pricing.	Paid One-time lifetime license with a 10-day free trial and a 30-day money-back guarantee.
macOS	macOS
Notes panel appears at the screen edge without app switching Markdown, tasks, images and colors in notes	Clipboard history, notes and file storage in one panel Opens with a simple scroll gesture at the top of the screen
Mac only Suited to quick notes rather than a large knowledge base	macOS only Paid after the trial period
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is 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 September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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