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Microsoft's IE posts biggest share drop in three years

Microsoft's IE posts biggest share drop in three years

Chrome projected to take No. 2 spot from Firefox by April 2012

Microsoft's Internet Explorer (IE) last month lost the largest amount of usage share in three years, according to a Web metrics firm.

The slide of IE, which dropped 1.8 percentage points to 52.6 per cent during October, came on the heels of a fall of nine-tenths of a point in September . Only IE's November 2008 plummet of more than 2 points was larger, according to data from Net Applications.

In the last three months, IE has lost 3.3 points, or 6 per cent of its total share as of July 31, the biggest three-month drop since October-December 2009.

As has now become rote, Google's Chrome and Apple's Safari were the winners in the browser race in October, boosting their shares by 1.4 and four-tenths of a percentage point, respectively.

Chrome ended October with a 17.6 per cent share, while Safari accounted for 5.4 per cent of all browsers used globally during the month. Both were records in Net Applications' tracking of desktop browser usage share.

Microsoft did not directly address the continued decline of IE today, but instead stuck to the message that it has used for much of the year, that Internet Explorer 9 (IE9) has increased its share on Windows 7, the company's newest operating system.

Worldwide, IE9 had a share of 22.5 per cent on Windows 7, an increase of 1.4 points. That put the browser in second on Windows 7 behind only Microsoft's own IE8, and far above the third-place Chrome 14, which accounted for 18.1% of all browsers used on the operating system.

In the U.S., IE9 had an even larger share of 34.9 per cent on Windows 7, more than that of all versions of Chrome and Mozilla's Firefox combined.

While IE9's gains have been impressive, the new browser - launched last March - has not stopped defections from older versions of IE to alternate browsers.

In October, IE9's share of browsers running on all operating systems, not only Windows 7, grew by 1.1 points to 9.8 per cent. At the same time, however, IE8, IE7 and IE6 lost a collective 2.7 points, or more than double IE9's increase.

IE8's share dropped nine-tenths of a point to 29 per cent, while IE7 and IE6 lost six-tenths and 1.1 points, respectively, to end October at 5.4 per cent and 7.5 per cent.

It's possible, of course, that when older versions of IE near extinction, that the desertions will slow or cease. But by the time Microsoft's long-game plan plays out, IE will have lost its majority position and fallen under the 50% mark.

According to projections based on Net Applications' data, IE will slip under 50% as early as January 2012, and if the losses of the last three months continue on their torrid pace, Microsoft's browser will account for just 43.7% by June 2012.

Chrome gained most of the share that IE lost, continuing a trend established in late 2009 when Firefox's growth stalled. Firefox ended October with a 22.5% share, unchanged from September.

Firefox remains in in danger of losing its second-place spot to Chrome: If the two browsers keep to their current trend lines, Chrome will overtake Firefox in April 2012.

Chrome should crack the 20 per cent mark in either January or February 2012.

Net Applications calculates browser usage share with data obtained from more than 160 million unique visitors who browse 40,000 Web sites that the company monitors for clients. More browser statistics can be found on the company's site.

Gregg Keizer covers Microsoft, security issues, Apple, Web browsers and general technology breaking news for Computerworld. Follow Gregg on Twitter at @gkeizer , on Google+ or subscribe to Gregg's RSS feed . His e-mail address is gkeizer@computerworld.com .

See more articles by Gregg Keizer .

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