Operating System Market Share

Off late I am tracking the market share of various operating systems. I used to read many user reviews, research data to keep updated. Today I found an interesting way to find out the operating system market share from the data which I have been accumulating. I use Google analytics to analyse the site statistics for this website. Google analytics captures the operating system and browser capabilities. That gives the visitor operating system capabilities. I just picked the last 3 months visitor statistics for my website and that gave a glimpse of market share of OS among the people who use internet the maximum.  The image over the left shows Windows is among the top with about 80%. But the data here shows only the PC users who have access to internet. In countries like India/China there are many PCs without an Internet connection and logically they would not be having a Mac/Linux but Windows (Highly likely a pirated version). Another interesting piece was there was couple of visitors from mobile devices to my website – from an Android/ iPhone/iPad. This shows people of now search more from mobile devices. Let us see how the Chrome OS skews this data set in future.