Rectangle Alternatives for Mac Window Management

Rectangle is free, open source, and the app most people install within a week of getting a Mac. It snaps windows to halves, quarters and thirds with keyboard shortcuts. Recent macOS versions added tiling of their own, which changes the answer for some people and not others. Here is a straight comparison.

What macOS now does on its own

Newer macOS releases include window tiling: drag a window to a screen edge to snap it, or use the Window → Move & Resize menu for halves, quarters and fills. There are keyboard shortcuts, and you can see them listed in that menu.

If your needs are "left half, right half, full screen", this covers it and you can uninstall your window manager. Where it falls short is thirds, custom sizes, cycling through sizes by pressing the same shortcut repeatedly, and multi-display behaviour. Those are exactly the things heavy users bought a window manager for.

On older macOS versions the drag-to-edge behaviour is not there at all, but two built-ins still help: double-clicking a window's title bar can zoom it, and dragging a window to the top of the screen enters full screen.

The app alternatives

• Rectangle Pro (paid) — the same developer's paid version, adding custom layouts, drag-to-snap zones and repeated-shortcut cycling.
• Magnet (paid, Mac App Store) — the commercial classic. Fewer options than Rectangle, very stable, and popular because it is a one-time purchase in the App Store.
• Loop (free, open source) — a radial menu you summon with a held key and steer with the mouse. Different interaction model, and people who like it like it a lot.
• Amethyst (free, open source) — automatic tiling in the style of Linux tiling window managers. Windows arrange themselves rather than you placing them. A big change in habit, and the right answer for a small group.
• Yabai (free) — the most powerful and the most involved, with scripting and full tiling. Some features need System Integrity Protection partially disabled, which is a real decision, not a footnote.

The part window managers do not solve

Snapping windows is placement. The other half of window pain is having too many windows open in the first place: fifteen apps behind your call, a desktop covered in clutter, a Dock full of things you opened yesterday. macOS has real tools for that side, and they are free.

1. Mission Control — press F3 or swipe up with three fingers to see every window at once.
2. Multiple Spaces — one per project, and swipe between them. Cheaper than another monitor.
3. Hide others — press Option-Command-H to hide every app except the one in front.
4. Hot corners — put Mission Control or Desktop on a corner you can flick to.

A tidy Mac needs both halves: something to place the windows you want, and something to clear the ones you do not.

Settings that make any window manager better

A few preference changes remove friction no snapping tool addresses.

# near-instant window resize animation
defaults write NSGlobalDomain NSWindowResizeTime -float 0.001

# drag any window from anywhere by holding Control-Command
defaults write -g NSWindowShouldDragOnGesture -bool true

# undo both
defaults delete NSGlobalDomain NSWindowResizeTime
defaults delete -g NSWindowShouldDragOnGesture

That second one is genuinely underrated: hold Control-Command and drag anywhere inside a window to move it, no title bar required. It works in almost every app and removes the fiddly aiming that window management usually involves. Log out and back in after setting it.

Which to pick

1. Halves and full screen only, on current macOS: use the built-in tiling. No app needed.
2. Thirds, cycling and multi-display control: Rectangle, free, still the best starting point.
3. App Store, one-time purchase, minimal fuss: Magnet.
4. Automatic tiling and you are willing to change habits: Amethyst, or Yabai if you want to script it.