Windows 7 early adoption rate outpaces Vista's

New OS hits 4% market share; XP loses ground, says Net Applications

By Gregg Keizer
November 10, 2009 01:09 PM ET

Computerworld - Windows 7 has broken the 4% market share barrier in less than three weeks, a mark that took Windows Vista five months to reach, a Web metrics company said today.

According to Net Applications, Windows 7 has crossed the 4% line in the California company's daily tracking of operating system usage. By comparison, Vista was under 1% a month after its late-January 2007 release to retail, and didn't exceed 4% until June of that year.

"Windows 7's rate of adoption is really impressive," said Vince Vizzaccaro, executive vice president of Net Applications.

With two-thirds of November to go, Windows 7 has already posted a daily market share average of 3.6%, close to the 3.8% that Vista reached at the end of May 2007. Since its Oct. 22 release, Windows 7's daily average has been approximately 3.2%.

Windows 7's share has been steadily increasing since its debut. The first week after its launch, the new operating system accounted for 2.7% of all operating systems used worldwide; the second week it climbed to 3.3%.

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