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AquaSnap vs Rectangle: catalog facts
AquaSnap	Rectangle
Freemium Free for personal use with core features. AquaSnap Pro is a paid licence adding keyboard…	Freemium Rectangle is free and open source under the MIT licence. Rectangle Pro is a separate paid…
Windows	macOS
Magnetic snapping between windows, not just to screen edges Grouped windows move and resize together	Keyboard shortcuts and drag-to-edge snap areas, both configurable Thirds and two-thirds layouts, not just halves
Windows only and closed source Keyboard shortcuts and some multi-monitor features are Pro only	macOS 10.15 or newer Needs accessibility permissions, which people are rightly cautious about
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 21, 2026

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