Note that browsers like Chrome and Firefox aren't allowed on Windows RT. Browsers for Windows RT can use IE's rendering and JS engine, but other existing engin

Note that browsers like Chrome and Firefox aren't allowed on Windows RT. Browsers for Windows RT can use IE's rendering and JS engine, but other existing engines won't work within the restricted "Windows Store app" environment. Windows 8 has a special exception to these restrictions. This exception is available only to the app you choose as your default web browser, to prevent other apps from using it. And it's available only on Windows 8 for x86 hardware, since Microsoft claims that's sufficient to satisfy the terms of their 2001 anti-trust settlement with the US DOJ.