AutoHotkey - The ultimate automation scripting language for Windows.
Moom - Move your mouse over the green zoom button in any window, and Moom's mouse control overlay will appear (as seen in the above animation).
Pulover’s Macro Creator - Pulover’s Macro Creator is a Free Automation Tool and Script Generator.
Hammerspoon - This is a tool for powerful automation of OS X.
AutoKey - A Python 3 port of AutoKey, the desktop automation utility for Linux and X11.
Spectacle App - Move and resize windows with ease.