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Mosaic vs Loop: catalog facts
Mosaic	Loop
Paid From £14.99, with a free 7-day trial.	Free Free and open source, with optional donations.
macOS	macOS
Drag-and-drop layout panel Custom layouts with gutters and groups	Radial menu for picking window positions quickly Keyboard shortcuts as well as mouse-driven selection
Paid after a 7-day trial macOS only	Requires macOS 13 or later macOS only
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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