Operating System Market Share

One of the side benefits of running a highly trafficked global site is that we can analyze and confirm changes in the market share of PC operating systems. Here is a graph showing OS market share for the past 30 days:


OS market share 2010

The large blue slice of the pie chart corresponds to all Microsoft operating systems, while the small green slice corresponds to all Macintosh operating systems.

Contrast the graph above with a similar one for the same period in 2009:


OS market share 2009

If our visitors are representative of the overall universe of web users, it looks like Microsoft has lost significant market share to Apple.