Windows: The new Win+X menu in Windows 8 is a shortcut to handy power user settings and tools, including the command prompt, device manager and so on. There's no built-in way to customise this menu at all, but the freeware Win+X Menu Editor gives you that control over the menu.
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The small utility lets you add and remove programs or shortcuts from the Win+X menu, as well as change their names. You can group several items together and easily reorder them.
The "Win+X" shortcut to get to this menu is one of Windows 8's best shortcuts (especially when you don't have a Start menu on the desktop by default). With this tweaking tool, it's even better.