Windows Explorer -- known as File Explorer on Windows 8 -- is an application that you probably spend a good amount of time in. Even Windows geeks that avoid using any other Microsoft program tend to use Windows Explorer instead of a third-party file manager. But, while we spend time customizing our browser with extensions, we often don't think about hacking our file manager. There are a lot of ways you can customize Windows Explorer to make your file management experience faster and more efficient.