There already is a good app store for Windows, and has been for a couple of years: http://allmyapps.com/ http://allmyapps.com/ You can download apps directly

There already is a good app store for Windows, and has been for a couple of years: http://allmyapps.com/ http://allmyapps.com/ You can download apps directly without using the installer, but the installer will update apps for you as well. There's also Ninite, of course, but AllMyApps has over 16,000 apps.