I have been using web browser, Firefox everyday since December 2004. I am extremely very happy with most useful Firefox add-on tool: extensions. It is small add-ons that add new and unique functionality to Firefox browser. They can add anything from a toolbar to right-click button to a completely new feature. They allow the web browser to be customized to fit the personal needs of each user if they need additional features. Here are my ultimate list of Firefox extensions:
Dictionary Search - Looks up a user selected word in an online dictionary. Simply click and drag on this word then click right-button mouse to go dictionary.
Tabbrowser Preferences - Tired of having multiple Firefox browser windows to switch? Get Tabbrowser, to enable enhanced control for tabbed browsers in one window.
ColorZilla - Want to know the exact color of hexadecimal or RGB in browser? It's great for web developers!
Web Developer - One of my favorites and must-have for web developers out there! Adds a menu and a toolbar to the browser with various web tools include converting from POSTs to GETs, hiding images, outlining level elements, disabling style sheets, resize browser resoultion, validations, and many more!
FlashGot - the ultimate download tool. It handle single and massive (all and selection) downloads using the most popular external download managers for operating systems.
Linky - Increase to handle links. Open/download/.validate links and pictures in tabs or windows.
Adblock - Prevents being manipulated by web advertisements (iFrame, Flash, etc) Just point the ad box and right-click : Adblock: done.
Wikipedia - Adds a toolbar for easier editing of Wikipedia pages.
LastTab - yet another most useful keyword shortcut to allow tab navigation in most recently used manner. I modifies Ctrl-Tab to switch the tabs.
That's all I have on my PC desktop. Also, I have to install same thing all over in my Apple Mac.. argh!

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