Spectacle allows you to organize your windows without using a mouse.

The Git interface you've been missing all your life has finally arrived.

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Managing windows size and position in OSX

A lightweight macOS window and app manager scriptable with JavaScript

Allows you to use your macOS Touch Bar from an iPad (through USB connection) or on-screen by pressing the Fn-key.

Afloat is a Mac extender that adds useful window management commands to most Mac apps.