Opera 10, the browser’s latest incarnation, ships with a visual tab bar that displays thumbnail previews when you expand it. This feature is particularly sleek and makes the browser even more beautiful.
If you’re a die-hard fan of Firefox, you can get the same features in your beloved browser by installing the Tab Sidebar addon.
Since Tab Sidebar provides a replacement for the main tab bar, when the sidebar is visible Firefox’s main tab bar will be hidden. If you still wish to use the main tab bar then you can show it again from the Tab Sidebar options.
