This article covered how to open Firefox page tabs in Opera. But there’s a better extension that enables you to open Firefox page tabs in any selected browser. That’s the Open With add-on which opens current Firefox pages in Opera, Google Chrome, Safari, IE and more besides.
Install the add-on from this page, and restart Firefox to activate it. Then click on the Open menu button. You’ll find it includes an Open with option as shown below.
In addition, you can also add Open With items to other parts of Firefox. For example, add the browser options to context menu by selecting Display as menu items from the Main context menu drop-down list. Alternatively, click Open menu > Customize to drag an Open With option onto the toolbar as shown below.