This weather extension is able to warn you against precipitation (like rain or snow) by a notification. One click and you can watch what is coming by the up-to-date radar animation on top of Google Maps. The data used originates from governmental weather services.
This add-on protects you from phishing or scams (through XSS injection attacks) while you’re on Facebook – Version 4.2 introduces a Tracking Protection feature as well. This add-on is designed to protect you against them. Facebook Phishing Protector will warn you when an unusual activity is detected, such as a script injection attempt or a website other than Facebook requesting your credentials.
Tired of the tweaks that YouTube has done to the subscription page? This neat add-on for Firefox will return you to a grid-based format so you can see more videos at once.
With New Tab Pro you can customize the number of the tiles on the New Tab page (about:newtab), right on that page via the buttons at the center of each side of the page. Or use the Options page of this extension to get the same effect.
Need a really big clock? There is a Firefox add-on out there to help you out! Big Clock Background will shows a big clock in the background when you open a new tab, reminding that time is flying. Clock is ticking, forever and ever. At times we tend to be lazy and loose track of time. This add-on will keep your spirit up by showing time right there.
Back IS Close replaces the “Back” button with a “Close” button when the “Back” button is disabled because there is no page to go “back” to. The close button will close the tab or browser, as appropriate.
Use Custom New Tab to load any URL you want when a new tab is opened. This is the only add-on (to the author’s knowledge) that allows the user a preference to have the focus placed on a web page (like a search engine’s search box) or in the URL bar.
Want to have an easier time reading webpages? Try Blackout. This great extension for Firefox will dim the proverbial lights on Firefox to make reading webpages a lot easier. A white background with black text can be really hard on your eyes after a while. This add-on flips those colors for easier reading.
Reader is the ultimate reading tool for your Firefox that brings the Safari 5 Reader features to Firefox and provides you the best reading experience by transforming text on any website using fonts, colors, and layouts of your choosing in a clean and distraction free environment.
The add-on, Enhanced Middle Click, will display history menu, tab list menu or toggle various sidebars with middle mouse button. I often forget my mouse has a middle mouse button (I use the scroll wheel a lot though) however, this neat little add-on for Firefox has made me see things differently.