Here there are my favourite Mozilla Firefox Extensions:

  • StumbleUpon: once tried, you never stop to use it! Surf and discover web sites based on your interests.
  • Speed Dial: useful instead of the common single home page.
  • Forecastfox: international weather forecasts in your Firefox toolbar.
  • Web Developer: various web developer tools.
  • Firebug: “edit, debug, and monitor CSS, HTML, and JavaScript live in any web page…”.

If you want to suggest me more Firefox Extensions, please, do it. ;)