A nice pack containing links to must have extensions for the famous browser by Mozilla (compatible with the latest stable version 3.6), here below the description of the 62 extensions of the pack:
abcTajpu
allows to insert accented letters easy
AdBlock Plus
blocks adverting/banner on web sites
AdBlock Plus Elementi Hiding
allows extra features to AdBlock Plus, hiding certain elements
AddThis
share and bookmarking addon (many web 2.0 social networking available)
AniWeather
realtime weather with animated features
AutoPager
automatically loads next pages when you reach the end of a page
Better Gmail 2
enhance the Google email service
Better Greader
enhance the Google rss feed reader service
CoolPreviews
previews links and images
Coral IE Tabs
allows to use IE rendering engine
Cybersearch
adds advanced Google Search capabilities to the address bar
Dictionary Switcher
toggles between the installed dictionaries and displays the currently selected dictionary in the status bar
Download Manager Tweak
enhance and add features to default download manager
Download Statusbar
view and manage downloads from a tidy statusbar
DownThemAll!
fast and full featured download manager
Facebook Toolbar
integrates the famous social network to the browser
Fasterfox
better performance speed
Feed Sidebar
add a sidebar with customizable rss feeds
Feedly
organizes your favorite sources in a magazine-like start page
Firebug
a must have for web developers
Firefox Showcase
easily find and manage your browser tabs
FireFTP
an integrated ftp client
FireShot
addon to capture screenshots
FlashGot
download all the links, movies and audio clips
Forecastfox
integrates weather in browser
FoxLingo
powerful translator
FoxTab
show tabs in 3d
FoxyProxy
advanced proxy manager
FoxyTunes
integrates and audio player (supports WMP, Winamp, iTunes, etc…)
Friendbar
Twitter and Facebook in a nice bar
Google shortcuts
all Google services in one button
Greasemonkey
allows you to customize the way a webpage displays
iMacros
record and play actions
Integrated Gmail
integrates the Google email service
LastPass
password manager
Lazarus Form Recovery
restore form contents after a crash or accidentally browser shut down
MR Tech Toolkit
tool to install and manage extensions
Multiple Tab Handler
adds features to manage more tabs at same time
No Script
security tool: blocks potential dangerous scripts
Picnik
easily and directly open images in the online editor
Pixlr Grabber
making screen grabs and pulling down images from the web
Quick Locale Switcher
allows you to quickly switch to a different language
Quick Translation
translation addon
QuickProxy
proxy manager
Read It Later
save pages in convenient way and read them later (also offline)
ReminderFox
a reminder for meetings / alerts etc…
ScrapBook
helps you to save Web pages and organize the collection
SearchPreview
inserts thumbnails and popularity ranks of web sites into the Google, Yahoo and Bing search results pages
Tab Mix Plus
enhances Firefox’s tab browsing capabilities
Tab Sidebar
displays previews of your tabs in your sidebar
Targeted Advertising Cookie
block advertising cookies
TinEye Reverse Image Search
allows you to search for an image to find out where it came from, how it is being used, if modified versions of the image exist, or to find higher resolution versions
Update Scanner
monitor web pages and warns about updates of them
User Agent Switcher
allows to change the default user agent
Video DownloadHelper
powerful video downloader
VideoSurf Videos at a Glance
get visual video summaries and related videos
Weave Browser Sync
Mozilla Weave synchronization
WebMail Notifier
notify about incoming emails to many webmails
WikiLook
Wikipedia look up tool
WordReference Translator
integrates WordReference service
WOT
powerful security tool
Xmarks
mantain own browser bookmarks and optionally saved password synced between various Firefox browsers of multiple pc