Android (Linux) + ChromeOS (Gentoo-based OS) + GNU/Linux at around 50% combined
Summary: Even though Android does not mean freedom, it's noteworthy that Microsoft's share in operating systems (common carrier) decreases rapidly, weakening the company's position in the market
IBM: Produce code for us till we buy the community... And never use "bad words" like "master" and "slave" (pioneered by IBM itself in the computing context)