Amethyst vs Karabiner-Elements

Amethyst is a free, open-source tiling window manager for macOS inspired by xmonad. It automatically arranges application windows into non-overlapping layouts using keyboard shortcuts, without requiring System Integrity Protection to be disabled. Amethyst supports multiple layout algorithms including tall, wide, fullscreen, and column layouts.

Karabiner-Elements is keyboard customizer for macOS that remaps keys, creates complex modifications, and supports per-app rules. It provides comprehensive features for productivity workflows. The tool is actively maintained with regular updates and strong community/vendor support.