Chocolatey - The sane way to manage software on Windows.

Drauger OS - Drauger OS is an Ubuntu-based Linux desktop gaming distribution that ships with many modifications and optimizations over stock Ubuntu that are intended to improve gaming performance and the gaming experience.

Scoop - A command-line installer for Windows

Fedora Games - The Fedora Games spin offers a perfect showcase of the best games available in Fedora. The included games span several genres, from first-person shooters to real-time and turn-based strategy games to puzzle games.

Ninite - Ninite is the easiest way to install software.

ChimeraOS - Steam, Epic, GOG, retro consoles, and more... all from your couch