The latest version of alternative web browser Opera features numerous improvements, including:

• faster browsing performance
• new: click a page’s tab to jump back to the top of the page; click it again to return
• new: added import and export buttons to the bookmark manager
• new: collapsible lists of opened and closed tabs in the tabs menu
• new: ‘Back to tab’ button for video pop-out windows
• new: global Flash allow
• new: safely and easily reset browser settings
• new: preferences backup
• new: use your desktop wallpaper as Opera’s background

The release announcement and change log for Opera 51 provide additional information. Note that the log includes changes made while Opera 51 was only available in beta and developer versions.