Install it from the Chrome App Launcher page and it will appear on your desktop taskbar in Windows or your dock on Mac OS X. Google provides a Chrome App Launcher that gives you quick access to Chrome apps. Just install them as you would any other app from an app store - they’ll be downloaded to Chrome and show up with your other installed Chrome apps. You’ll see all the currently available packaged apps. To install Chrome apps (formerly known as Chrome packaged apps), visit the For Your Desktop section in the Chrome Web Store. On traditional operating systems, Chrome apps will run side by side with whatever other apps you’re running on your desktop.
Google wants to replace native apps with Chrome apps written in web technologies, which would then make it easy for you to switch to a Chromebook.
We wrote about Google’s plans to bring Chrome OS to your current computer before.
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