Vista grows as Mac popularity tails off

Windows Vista usage is growing while Mac OS X usage is basically flat, according to Net Applications.

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Windows Vista usage is growing while Mac OS X usage is basically flat, according to Net Applications.

In June, Windows Vista accounted for 4.52% of all systems that browsed the web, up from January's 0.18%. Vista has grown its usage share each month since its release to consumers, hitting 0.93 percent in February, 2.04% in March, 3.02% in April, and 3.74% in May.

Apple's Mac OS X, meanwhile, accounted for 6.22% in January and hit its high point of 6.46% in May, but it slipped back to 6% in June.

If Vista's uptake trend continues, it should pass Mac OS X in web usage share by the end of August.

Shifts from the Mac OS X running on older PowerPC processors to the edition running on Intel CPUs have been constant, but according to Net Applications' data, the decision is not making new Mac converts.

In January, for example, the PowerPC version of Mac OS X was reported by 4.34% of the machines Net Applications tracked, while the Intel version accounted for just 1.88%. June's numbers showed that the PowerPC edition of the operating system still held the lead, but the gap had narrowed considerably: Older versions were pegged at 3.52% and Intel editions at 2.48%.

Likewise, Vista's increases have come at the expense of Windows XP and Windows 2000, both of which have dropped in usage since January. Windows XP, for instance, accounted for 85.02% of all machines that month but was down to 81.94% in June. Windows overall total has remained flat, ranging between 90.01 percent and 90.46% through the first six months of the year.

Net Applications' 6% share for Mac OS X jibes with recent IDC sales estimates, which put Apple's portion at 5.6% of all personal computer sales in the US during the second quarter.

Apple's next major upgrade to Mac OS X, Leopard, is scheduled to ship in October.

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