Key Features
- Snap windows to edges and corners
- Custom keyboard shortcuts
- Multi-monitor support
- Zero background CPU usage
Pricing
Rectangle is completely free and open-source. Rectangle Pro ($9.99 one-time) adds advanced features like throw windows and custom layouts.
Why Mac Users Choose Rectangle
Rectangle is the most popular free window manager for macOS, with over 100,000 GitHub stars. It fills the gap left by macOS's lack of native window snapping — a feature Windows has had since Windows 7. The app uses the macOS Accessibility API rather than injecting code into system processes, which means it does not require disabling System Integrity Protection (SIP).
Keyboard shortcuts follow a logical pattern: Ctrl+Option+Arrow keys snap windows to edges and corners, while Ctrl+Option+Enter maximizes. The app uses less than 0.1% CPU at idle — a deliberate engineering choice by the solo developer who maintains it. Rectangle is open-source under the MIT license.