Internet Explorer 7 and Firefox 2.0 are in a percentage by percentage face off. And Firefox is slowly eroding IE's market share. Although Internet Explorer is by far the dominant browser on the market, in correlation with the Windows operating system, Firefox has grown and continues to grow in the detriment of IE.

By the end of 2005, Internet Explorer had geared toward a descendant trajectory. Microsoft has been losing its grip on the browser market and the situation has perpetuated itself even after the launch on IE7. Mozilla on the other hand has moved to fill the gap left by Microsoft.

Also from 2005, Firefox has been on an ascendant trajectory and has survived the release of Internet Explorer 7 without a scratch. IE7 did little to regain Microsoft's lost percentages on the browser market.

A new study compiled by research firm WebSideStory, indicates that Firefox has increased its market share by 0.86%. In this context, Firefox now accounts for 10.7% of the US browser market in December. In mid-October, Mozilla's open source browser was at 9.84%. The increase in market share of Mozila's Firefox browser is illustrative of Internet Explorer's loss. IE amounted in December for 88.2% of the browser market, down from 89.1% in October.

WebSideStory adds in its study that, although the release of Internet Explorer 7 has had little effect on the evolution of Firefox, it has impacted the other browser products on the market. WebSideStory concludes that IE7 has managed to tamper market gains by alternative browsers.

Another conclusion presented by WebSideStory is that Internet Explorer is a common presence in the work place, as it is associated with the Windows operating system. In this regard, Firefox's market share increases over the weekends as the open source browser is more specific at home.