Snap windows into thirds and more with Rectangle

Since Sequoia, macOS can put a window into half or a quarter of the screen by itself, and that is where it stops. Rectangle, free and open source, covers the rest: thirds, two-thirds, sixths, centring a window, sending it to the next display and plenty more.

It works in two ways:

• From the keyboard. Every position has its own shortcut. Rectangle’s menu bar icon lists them all, and you can reassign any of them in its settings.
• By dragging. Pull a window by its title bar to an edge or a corner and an outline shows where it will land. The sides give halves, the top edge maximises, the corners give quarters and the bottom edge gives thirds.

To move other apps’ windows it needs Accessibility permission. On Sequoia and later, if both Rectangle and macOS are set to tile windows dragged to the screen edge, Rectangle spots the clash and asks which of the two to switch off.

With Homebrew:

brew install --cask rectangle

To remove it along with its preferences, brew uninstall --zap rectangle.