The Most Popular OS in the World

The most popular Operating system in the world, going by number of units installed, is not Windows, or Linux, or anything like that, but actually a small embedded OS called ITRON.

I guess that makes sense. People don't usually own more than one computer, but they always own dozens of electronic gizmos, many of which run this embedded OS. Likewise with corporations-- the number of small computers outweights the number of big ones.