Always have your city's weather forecast at your disposal with this add-on for Firefox.
Shorten, recommend, or share content with your friends from any site with this extension for Chrome!

Browser that values the privacy of its users.
Lightweight and customizable browser based on the Gecko layout engine developed by Mozilla.
Utility that displays the details of all browser add-ons/plugins installed on your system.

Extension for Firefox that notifies you every time your friends update their Twitters.