According to figures by analytics firm StatCounter, in the period June 2009 to June 2011, Google's Chrome web browser increased global market share to over 20% from 3% in 2009, while Microsoft Internet Explorer (IE) usage declined (see graph below).
Aodhan Cullen, CEO at StatCounter, said IE market share fell from 59% to 44%, while Firefox usage declined from 30% to 28%.
"It is a superb achievement by Google to go from under 3% two years ago to over 20% today," added Cullen.
In the UK, IE is still the dominant browser, with almost half (46%) market share in June. Chrome and Firefox are competing with 21% and 22% market share respectively.
In September 2010, IE UK market share fell from 60% in 2009 to 54.6%, while use of Google's Chrome has risen from 4% to 13% in a year.
IT administrators recently spoke out about the testing and deployment implications of Mozilla's rapid release process for Firefox, which creates the need for enterprises to certify websites, apps and add-ons every time Firefox is updated.
In response, Microsoft outlined its commitment to making it easy for enterprise customers to manage updates every eight weeks to ensure compliance with its requirements.