RectangleFlow
Free · Open source · macOS

Window management for people who work with more than two windows

Independent, in-depth guides to keyboard-driven layouts on macOS — built around Rectangle, the free window manager. Halves, thirds, quarters, multi-monitor rebuilds and the settings that make them stick.

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Why a layout beats a habit

Four reasons a keyboard-driven window manager changes how a working day feels.

⌨️

One keystroke, one position

Every region of the screen has a shortcut. Arranging windows stops being an activity and becomes a reflex.

🧭

Spatial memory does the work

When reference material always lives in the same corner, your eyes go there without conscious direction.

🔄

Reversible by design

The restore command returns a window to its exact previous size, which is what makes focus modes practical.

💸

Free and inspectable

The core app is open source with no trial period — which matters for software that needs Accessibility access.

Latest guides

Written for a specific kind of work rather than for a feature list.

All 18 guides →

Start here

Three questions that cover most of what people arrive looking for.

Setting it up

Install, grant Accessibility permission, and understand exactly what that permission allows before you agree to it.

Every shortcut

The full default list, plus the six commands worth learning first and ignoring the rest until they stick.

When it stops working

A diagnostic order that finds the cause in about three minutes instead of an afternoon.

Common questions

Short answers. Longer ones live in the guides.

What is Rectangle?

A free, open-source window manager for macOS that positions windows into halves, thirds, quarters and sixths using keyboard shortcuts or drag-to-edge snapping. Rectangle is maintained as an open-source project and requires no account.

Do I need it if macOS already tiles windows?

If you only ever want two windows side by side, probably not. If you want thirds, sixths, size cycling or fast multi-monitor moves, the built-in feature runs out quickly.

Is the free version enough?

Every layout described on this site works in the free build. The paid tier adds saved multi-window arrangements, which is a convenience rather than a requirement.

Why does it need Accessibility permission?

macOS does not allow one application to move another application's windows without it. It covers window geometry only — not content, and no network access is involved.

Glossary

Terms used throughout these guides.

Window manager
A utility that sets the size and position of application windows via shortcuts, replacing manual dragging.
Snap area
A screen region that triggers automatic positioning when a window is dragged into it.
Cycling
Repeated presses of one shortcut advancing a window through related sizes — half, third, two thirds.
Restore
Returning a window to the exact size and position it held before the last snap.
Gaps
A configurable margin inserted between snapped windows and the screen edge.
Space
A macOS virtual desktop. Window layouts are held per Space, so each context keeps its own arrangement.