Firefox's Share of Browser Market Grows 34 Percent in One Month

WebSideStory: "Firefox's Share of Browser Market Grows 34 Percent in One Month"

"Firefox has made significant gains and Microsoft’s Internet Explorer’s usage share continues to fall in the United States. Between Nov. 5 and Dec. 3, Internet Explorer’s share dropped 1.09 percentage points to 91.80 percent, according to WebSideStory. This compares with a 0.32 percentage point drop the previous month. Since June 4, 2004, when IE’s usage share first began to drop due to security concerns, IE has lost a total of 3.68 percentage points."

U.S. Browser Usage Share

Browser 12/3/2004 11/5/2004 10/8/2004 6/4/2004
IE 91.80% 92.89 93.21 95.48
Firefox 4.06 3.03 2.66 *3.53
Non-Firefox Netscape and Mozilla browsers 2.83 2.95 3.05
Other 1.25 1.07 1.03 .95

* WebSideStory did not track the Firefox browser separately until Oct. 2004. The June 4, 2004, figure includes all Netscape and Mozilla-based browsers, including Firefox

Source: WebSideStory