In October 2012, Google Chrome continued to gain market share from IE and Firefox. IE market share did not see a lift from the Windows 8 launch.
In October 2011, IE lost significant market share, while Google Chrome gained the most.
In October 2010, Google Chrome continued to gain share while IE lost market share for the third consecutive month.
IE market share dropped below 50% during October 2009. The release of Windows 7 apparently did not help change IE’s fortunes.
Browser market share for October 2008. During the month, IE lost 1.63% in market share, with most of that going to Firefox.
Browser market share for October 2007.
Below is the % browser share, based on traffic to my two highest trafficked sites in October 2006: IE: 68.2% Firefox: 28.0% Opera: 2.0% Safari: 0.8% Mozilla: 0.6% Netscape: 0.3% Konqueror: 0.1% Compared to the September 2006 numbers, IE declined by 1.5%, and Firefox gained 1.5%. There was no significant change in the smaller players. […]