Opera Software has debuted the newest version of its web browser today. Opera 11 is available for Mac, Windows and Linux computers at http://www.opera.com/ . New features include:

° Tab stacking: simply drag one tab on top of another to create a stack.

° Extensions, which help you personalize your browser and enhance what Opera can do.

° NoAds, an ad-blocking extension.

° LastPas, a password manager and form filler.

° FastestTube, which lets you download any video from YouTube.

° Image preview, which displays a pop-up preview of an image.

° Translate, which translates foreign-language web pages.