2. Security

SPDY also delivers a boost in security to Firefox 13 thanks to the fact that it encrypts all communication with SSL so as to make browsing more secure.

3. A New Home

Those of us who have been using Firefox for some time will notice a freshly redesigned home page in version 13. Now included, for example, are icons at the bottom of the page that provide easy access to bookmarks, history, settings, add-ons, downloads, and sync preferences via one-click shortcuts.

4. A New Tab Experience