We have much the same functionality at http://PortableApps.com/ You get an app store, an automatic app updater, an app manager, and hundreds of freeware and open source apps. All free of malware and bundleware.

As a bonus, all the apps run from a single directory each, making it easy as pie to uninstall and remove all the apps settings at the same time (as opposed to bits left behind in AppData, Local AppData, the Registry, your Profile directory, etc). And they're portable, so you can run them from a cloud drive (DropBox, Google Drive, etc) that's backed up and synced between machines or from a USB drive.