Windows only: While Windows Explorer can sort files by type, by default it doesn't display or sort files by extension in a separate column—but the Extension Column add-on does just that. Install this ...

I was all set to put this “Windows Explorer Explained” series to rest for a while, but then reader Martin wrote in with a question that comes up a lot: in Windows 7, how do you reveal the hidden file ...

Microsoft’s upcoming “Spartan” browser will indeed have extensions, Microsoft confirmed Tuesday—eventually. Microsoft’s Internet Explorer team confirmed the addition in a Twitter chat. #AskIE @bdsams ...