Adblock Plus
Annoyed by adverts? Troubled by tracking? Bothered by banners? Install Adblock Plus now to regain control of the internet and change the way that you view the web.
Official Website:- http://adblockplus.org/
Download Here:- Adblack Plus
Greasemonkey
Customize the way a web page displays or behaves, by using small bits of JavaScript.
Official Website:- http://www.greasespot.net/
Download:- Greasemonkey
DownThemAll!
The first and only download manager/accelerator built inside Firefox!
Official Website:- http://www.downthemall.net/
Download:- DownThemAll
Better Gmail 2
Add useful extra features to Gmail, like hierarchical labels, an unread message icon on your browser tab, file attachment icons, and more.
Download:- BG2
Theme Font & Size Changer
Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.
Website:- http://barisderin.com/?p=286
Download:- Theme Font & Size Changer
Quick Translator
The most lightweight and easiest translator. Translate between more than 50 languages with one click or a hot key. Translate from one word to a whole page.
Download:- Quick Translator
LastPass Password Manager
LastPass is a free online password manager and Form Filler that makes your web browsing easier and more secure. Also for IE, Safari and Chrome. Your sensitive data is encrypted _locally_ before upload so even LastPass cannot get access to it.
Website:- https://lastpass.com/
Download:- Last Pass PM
Adds the ability to create and edit password entries in the password manager.
Download:- Saved Password Editor
LinkExtend - Safety, KidSafe, Site Tools
LinkExtend provides meta-site-ratings for computer safety, child safety, company ethics, and popularity. Safety results come from eight online services giving you a safer browsing experience. Site links, titles, files and reviews are also included.
Website:- http://www.linkextend.com/
Download:- LinkExtend - Safety, KidSafe, Site Tools
BrowserProtect
Protect your browser against search and homepage hijacks because your browser is yours!
Website http://www.browserprotect.org
Download:- BrowserProtect
ShowIP
Show the IP address(es) of the current page in the status bar. It also allows querying custom information services by IP (right click) and hostname (left click), like whois, netcraft, etc. Additionally you can copy the IP address to the clipboard.
Download:- ShowIP
