You can, for example, tell Safari to open all links in new tabs, rather than in new instances of the browser.

Google overhauled Gmail with its new tabs interface last year, and it released the even more radical Inbox app in October.

Once installed, head to your site, click the Firebug icon and look for two new tabs: Page Speed and Page Speed Activity.

Tabs on Top The Firefox Button works nicely with the new tabs-on-top format to give you more screen space for viewing Web pages.

Safari 4 also introduces a new preference to specify whether new tabs or windows open with your homepage, the same page, empty page or bookmarks.