FireFox

Firefox is the best browser available. The software magazines say so too. It knocks spots off Internet Explorer and not only is it standards compliant, unlike IE which at version 7 still has bugs, but it has loads of useful add-ons. For example: Aardvark (remove parts of a web page to make it nice to print), NoScript (control what scripts run), Adblock, Dictionary (checks your spelling on web forms), Form-resize, IE tab (uses IE to render a page - good for poor, non-compliant websites that only work in IE) and many more.