Firefox 1.5 has been released after the 1-year wait from the last major software update, Firefox 1.0. It sports a new rendering engine (Gecko 1.8) as well as hundreds of other software improvements. Important changes include faster page loading, the ability to reorder tabs, faster back and forward buttons, a feature to clear personal data, improved accessibility and popup blocking, and SVG, CSS 2 and CSS 3, and JavaScript 1.6 support. You can download it here.
Firefox has attracted attention as an alternative to other browsers such as Microsoft Internet Explorer. As of September 2005, estimates suggest that Firefox's usage share is around 7.6% of overall browser usage (see market adoption section). Since its release, Firefox has slightly reduced Internet Explorer's dominant usage share.