Blocks annoying video ads on YouTube, Facebook ads, banners and much more.
Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
S3.Google Translator adds the power of Google Translate’s automatic translations to your browser!
It supports translation of selected text, entered phrase or whole webpage between any of 80+ languages.
New Feature: Language learning!
View and manage downloads from a tidy statusbar
This is a new life in Firefox 26+ for old well-known addon Download Statusbar
New Features: Replace Downloads Library page.
Now you have full control of your downloads history!
Screengrab! saves webpages as images.
New features: upload to internet
4,094 weekly downloads
Privatelee.com (HTTPS) combines the best results from Google and Bing with the ultimate private search engine.
Privatelee does not save IP address or set uniquely identifiable or ad network cookies.
Features like WOT rating, infinite scrolling
Australis, the new Firefox theme, made a great browser look awesome. And now it will also feel awesome using it!
Color tools for web development.
Color picker and eyedropper + saving colors and trying out colors with drag and drop.
Make any pages' search functionality available in the Search Bar (or "search box")...
Allows to customize or disable most of the shortcuts offered by Firefox. This add-on does *not* allow to add new shortcuts.
Anything between simple tweaks such as placing the findbar in the top corner, to the powerful "Find in All Tabs" tool, FindBar Tweak will make your find toolbar "just right"!
Select a number of links with a rectangle and open them all in new tabs in the same or a new window(s), download them or copy them to the clipboard. You can also lasso checkboxes to quickly check or uncheck them.
Piece together all of your add-on buttons and extras into your browser window in exactly the way you want them!