There was a time when the terms 'Web browser' and 'Internet Explorer' were more or less synonymous, but times have changed. Over the past few years a significant and still growing number of users have switched to Mozilla Firefox and, more latterly, Google Chrome, disappointed with recent releases of IE and lured away by the performance, usability and security of the alternatives. Internet Explorer is still the most used browser around, at least on Windows. However, its market share had been seriously dented and, with IE9, Microsoft is hoping to make up for lost ground. First impressions are that it may have some success achieving that goal.