Firefox growth slows, IE holds steady
Safari down in July, matches drop in Mac OS X share
According to Net Applications Inc., Firefox accounted for 19.2% of the browsers used to access the 40,000 sites the company monitors for its clients, an increase of just 0.2 percentage points over June. The gain was substantially lower than the 0.7- and 0.6-point increases that Firefox posted in May and June, respectively; it was also less than half the average increase during the last 12 months.
"I thought Firefox would hit 20% by July," said Vince Vizzaccaro, Net Applications' executive vice president of marketing, referring to a prediction he made two months ago, when Firefox's trend line was steeper. "Now it looks like that could be still be another couple of months off."
Use of Firefox 3.0, the major upgrade that debuted in mid-June, however, continued to grow; the new version's share climbed from 2.3% at the end of June to 5.7% at the end of July. Most of July's gains, however, appeared to come at the expense of its predecessor, Firefox 2.0, whose market share fell 3.1 percentage points last month.
The move from Firefox 2.0 to Version 3.0 will likely accelerate when Mozilla decides to automatically offer the latter as an upgrade to Firefox 2.0 users. Although the company has discussed the move, it hasn't yet set a date when it will trigger the update offer.
Microsoft Corp.'s IE, meanwhile, held steady in July, with a market share of 73%, the same as it had in June. The browser has lost market share in nine of the last 12 months, and on average slipped by 0.6 percentage points during those months.
Safari also ran counter to recent trends during July. Apple's browser usually posts small gains each month -- primarily on the back of increases in Mac OS X market share -- but the application was off 0.2 percentage points in July, its biggest drop since the 0.3-point decrease in June 2007.
On another front, Net Application said that Mac OS X's share of the operating system market was also down 0.2 percentage points from June.
"That could just be a little blip," Vizzaccaro said. "They normally don't have a setback, but this may mean its share might grow more slowly."
Net Applications' browser share and trend data is available online.
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