Automatycznie wygenerowana lista zainstalowanych dodatków
Polish spell-check dictionary for Firefox 2.0/3.0pre, Thunderbird 2.0/3.0a1 and SeaMonkey 1.1/2.0a1...
TooManyTabs allows you to store as many tabs as you like by adding extra rows in the Firefox! It saves your browser's space and memory as idle tabs are put aside. The extra rows also help to better prioritize and visualize your tabs.
More Advanced (hidden) configures
Stratiform is the ultimate user friendly customization add-on for Firefox. It puts the power in the average user's hands to customize the browser's look.
Automatically find user scripts on Userscripts.org (requires Greasemonkey or Scriptish)
A complete redesign of popular Google services, Google Redesigned changes the appearance of popular Google services.
Enable multi-color highlighter and post-it notes as your reading aids; Capture the whole page or any portion to share or archive; Save everything online to allow access anywhere. See Youtube http://bit.ly/g5GvDw
This extension provides advanced configuration for your browser and many additional options, which are not displayed in the Firefox Preferences.
Clip to OneNote is a free add-on which helps you to send text, pictures and other data to Microsoft Office OneNote with a single click.
Display all Google services as buttons or as a space-saving dropdown menu next to your address bar. Reach services like Gmail, Google reader, Google maps, Google calendar, and many more in a single click from your browser.
Zoom in, zoom out, and reset page zoom with one toolbar button (saves toolbar space). Zoom by clicking on the button, or by rolling the mouse wheel.
CLEO (Compact Library Extension Organizer) is a Firefox extension that works with FEBE* to package any number of extensions/themes into a single, installable .xpi file.