Top10 firefox addons

1. Adblock Plus– Ads were yesterday!
2. Delicious Bookmarks– Access your bookmarks wherever you go and keep them organized no matter how many you have.
   (Or better: Diigo–Web Highlighter and Sticky Notes)
3. LastPass– Last Password you will ever need
4. FoxTab – Quickly switch between tabs using interactive tab switching modes.
5. DownThemAll! – The mass downloader for Firefox.
   (Or FlashGot + IDM/Flashget/ Aria2c – for Linux)
6. Personal Menu– Create your own menu and save more space.
7. Fission– Progress bar in the address bar (Safari style).
8. FEBE – Backup your Firefox data
9. Clipmarks– Clip and save just the stuff you want from any web page.
   (orEvernoteWebClipper – Provides a button and context menus to easily add a selection or an entire page to Evernote)
10. ScribeFire– A full featured blog editor that integrates with your browser and lets you easily post to your blog.

Others:

1. Download Statusbar,
2. Firebug– Web Development Evolved
3. ScrapBook – Helps you to save Web pages and organize the collection.