Internet Explorer has been facing growing competition from rival browsers, but it's still the leader with more than 50 percent of the market, according to Net Applications.
IE grabbed a 54 percent market share last month, down from 56.7 percent a year ago. Traveling further back in time reveals an ongoing decline from November 2007 when Microsoft held almost 80 percent of the desktop browser market.
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IE hangs on to more than half of browser market | Microsoft - CNET News