NetApplications is reporting that IE’s market share has dipped below 70% for the first time since they started tracking usage in 1999.
The decline is largely attributed to the Mozilla Foundation’s Firefox browser which now commands nearly 21% of the market. NetApplications explains some motivations for this November/December spike in Firefox popularity:
- First, the U.S. election. Firefox usage share increased significantly in the days surrounding November 4th (especially in some non-U.S. countries, like Japan), then held roughly steady until:
- Second, the Thanksgiving holiday. Firefox share jumped starting on Wednesday the 26th until the end of the month.
- Third, extra weekend days. The average 30-day month has 8.57 weekend days. November had 10.
- Fourth, higher unemployment. With an increase in unemployment, a higher than typical percentage of people are browsing from home than the office
Regarding Mozilla’s achievement, Foundation CEO John Lilly attributes their success to open standards, global contributions and burgeoning interest in FOSS.
“Reaching 20 percent worldwide market share is a significant milestone for Firefox and Mozilla. It’s a huge achievement by the global Mozilla community, one that just a few years ago most would have considered impossible. The open web is more vibrant than ever, and the thousands of Mozilla contributors around the world have played a major role in making it that way,” he wrote.

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