Chocolatey - The sane way to manage software on Windows.
Just Install - just-install - The stupid package installer for Windows.
AppCake - AppCake is a website and mobile app that gives you a place to download apps for your iPhone from. The site features all sorts of apps, from games to productivity based apps. Read more about AppCake.
Scoop - A command-line installer for Windows
Microsoft Store - A world of apps in the Microsoft Store.
Windows Remix - Web-based batch software installer with zero dependencies. Recommended first visit after reinstalling Windows or buying a new laptop.