Ninite - Ninite is the easiest way to install software.
Chocolatey - The sane way to manage software on Windows.
MacUpdate Desktop - MacUpdate Desktop makes managing and updating your applications easy and automatic.
Just Install - just-install - The stupid package installer for Windows.
Ubuntu Software Center - The Ubuntu Software Centre gives you instant access to thousands of free and open-source...
Scoop - A command-line installer for Windows