Amethyst vs SelfControl

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.

SelfControl is Free macOS app that blocks access to distracting websites for a set time period.. It is available under a free model. This tool falls under the productivity category.