Linux is now on everybody's radar, both in server rooms and on the desktop. Though most people have heard of Linux, far fewer of them actually use it on a day-to-day basis. Dig into our "State of the OS" report to see what's up, where the action is, and why this phenomenon is unlikely to slow down any time soon. Today, Linux appears on virtually all forms of computer technology - from laptops to desktops, workstations to servers, and even discretely in the form of portable media players and handheld devices. There's a good chance that, even in what is essentially an all-Windows shop, there's an unassuming Linux device gently nestled in that picture somewhere (perhaps even running in a hidden partition on an otherwise all-Windows PC). It could be a cellular phone, a broadband router, a network attached storage unit, or a hand-held device, just to name a few items that might easily escape casual notice.

Toms Hardware Guide