Windows 7 has been a huge success for Microsoft, but its sales and usage had not been enough to stop Windows from slowly losing usage market share to Mac OS. That is, until February 2010, when Windows overall had a gain in market share.

NetMarketShare.com from NetApplications.com provides global usage market share statistics for browsers, operating systems and search engines. This data offers valuable insight into significant trends for internet usage.

As previously reported, Windows 7, released in October 2009, has been the fastest selling operating system in history. It hit the ground running with a large number of people in Microsoft’s test program, and had over 2% usage market share at launch. Win7 peaked above 5% within a month, and peaked above 10% in just over 3 months.

But, for Windows to gain usage share against both Mac OS and Linux is a rare occurrence over the last few years. The question is whether this is an exception, or if a new trend is beginning. And, if Windows continues to gain usage share, what will Apple do to combat the new trend?

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