Amethyst

Amethyst provides a tiling window manager for macOS, arranging application windows in non‑overlapping frames automatically. It follows the design of xmonad, offering multiple built‑in layouts and allowing users to switch between them with keyboard shortcuts. The manager relies on macOS accessibility APIs, requiring the user to grant appropriate permissions and to disable the default “Automatically rearrange Spaces” setting for predictable navigation.

The tool is distributed as open‑source software and can be installed either from the project’s release page or via Homebrew Cask. It supports macOS 10.15 and later, and configuration is performed through a plain‑text file that defines modifier keys, layout preferences, and custom shortcuts. Users can manipulate window size, focus, and placement across multiple displays and virtual spaces using the predefined key combinations.

Amethyst targets developers and power users who prefer keyboard‑driven workflows and want to increase productivity on macOS without relying on a graphical window manager. Its stable release status and community‑maintained documentation make it a practical option for those familiar with tiling window concepts.