That looks about the same as it would have 6 years ago. It's still mostly Windows, then Mac OS. In fact, I'm surprised OSX hasn't grown to more than 5. Open so

That looks about the same as it would have 6 years ago. It's still mostly Windows, then Mac OS. In fact, I'm surprised OSX hasn't grown to more than 5. Open source hasn't stopped Microsoft or even slightly slowed their growth. The only thing that's had any noticeable effect is the recession.