Open Source Swift Window Managers

Rectangle is a window management app based on Spectacle, written in Swift.

Loop is a macOS app that simplifies window management for you. You can effortlessly choose your window direction using a radial menu triggered by a simple key press, and customize it according to your preferences with personalized colors and settings. You can easily move, resize, and arrange your windows with just a few clicks, saving you valuable time and energy. Loop is constantly evolving, with new features and improvements added regularly to enhance your window management experience on macOS.

Tiling window manager for macOS along the lines of xmonad. Amethyst is available for direct download on the releases page or using homebrew cask. Amethyst now is only supported on macOS 10.12+. Amethyst must be given permissions to use the accessibility APIs under the Privacy tab of the Security & Privacy preferences pane. Amethyst uses two modifier combinations. Amethyst allows you to cycle among several different window layouts. Layouts can also be enabled/disabled to control whether they appear in the cycle sequence at all. The default layout gives you one "main pane" on the left, and one other pane on the right. By default, one window is placed in the main pane (extending the full height of the screen), and all remaining windows are placed in the other pane. If either pane has more than one window, that pane will be evenly split into rows, to show them all. You can use the keyboard shortcuts above to control which window(s), and how many, are in the main pane.

AeroSpace is a keyboard-first tiling window manager for macOS that brings i3-/Sway-style workflows to Apple’s windowing environment. Instead of manual dragging and stacking, windows are tiled automatically, and you navigate, move, or resize them using predictable, customizable keybindings. It supports multiple workspaces, per-display organization, and floating exceptions, so you can mix strict tiling with apps that are better left unmanaged. Configurability is a core goal: you can define rules for how specific apps should launch (tile vs. float, workspace placement), adjust gaps and padding, and fine-tune focus behavior. The project aims to feel native on macOS—respecting system features and accessibility—while giving power users the velocity they expect from a tiling manager. For developers and creators juggling many windows and monitors, AeroSpace reduces window fiddling to near zero, turning your desktop into a consistent, scriptable layout you can rely on all day.