A new report from Net Applications shows Windows Vista more than doubled its marketshare in March, compared to February, while the share of computers running Mac OS X dropped for the first time in nine months.
By the end of March, Vista was used by 2.04% of computers connected to the Internet, according to the Aliso Viejo, Calif.-based company. That's up from 0.93% of PCs in February.
Now ranked the fifth-most popular operating system by Net Applications, Vista jumped ahead of Windows 98, which had a 1.36% share. Vista still trailed its seven-year-old ancestor, Windows 2000, which had 4.71% share in March.
The share of PowerPC-based Macs fell, though, from 4.29% in February to 3.94% in March. That dip was not fully offset by an increase in Intel-based Mac hardware, leading to a overall net decline in Mac share of 0.3%, to 6.08% in March.
Net Applications collects its data from the browsers of visitors to its network of more than 40,000 Web sites.
Vista has now been available to consumers for two months -- and to businesses for four months. Microsoft said last week that it had sold more than 20 million licenses of Vista, eclipsing the 17 million licenses for XP it had sold in its first two months of general release.
I just checked DV Hardware's March statistics and they indicate that already 5.93% of our visitors use Windows Vista, for the first seven days of April this is already up to 6.59%. Mac OS X is only used by 3.82% of our visitors.