Opera 11.50

The most full-featured Internet power tool on the market, Opera includes tabbed browsing, pop-up blocking, integrated searches and advanced functions like Opera's groundbreaking e-mail program, RSS Newsfeeds and IRC chat. And because we know that our users have different needs, you can customize the look and content of your Opera browser with a few clicks of the mouse.
The Opera Web browser offers several new features for functionality, security, usability, customization, searching, saving, taking shortcuts and accessing Web content.

Whether you're going to work, working from home, developing Web sites, or just looking for a quick, solid browser that can help you quickly access the Internet, Opera delivers a superior Web experience for every aspect of your online life, with lots of tech tools for power users.

OS : Win XP/2000/Vista/Win 7
here is download link for opera: http://www.opera.com/download/
Here is download link for opera : http://www.opera.com/download/