Figures from web measurement firm Net Applications show that Firefox’s market share grew almost 50% compared with the 9.5% it had at the beginning of 2006.
Most of Firefox’s growth was at the expense of Microsoft’s Internet Explorer browser, which saw its share fall to 79.5% from the 85% it held at the beginning of the year.
Both Mozilla and Microsoft launched major upgrades to their browsers last year, adding new security and functionality.
Apple’s Safari web browser benefited from increased Mac sales, and saw its share of the market grow from 3.1% to 4.2%.
The Opera browser grew from 0.6% to 0.9%, but AOL’s Netscape browser slumped from 1.24% to 0.9%.
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