Adblock Plus- never see another annoying in-page ad again! Automatically updates filters, to keep you banner free.

Download Statusbar- keeps your browsing neat and simple by removing the need for a separate download window.

Gmail Manager- sits on the statusbar in Firefox, silently checking for new mail at a user defined time interval. Just click the icon to jump to your Gmail inbox.

Remove it Permanently- ever wanted to clean up a webpage, get rid of some buttons or links that you will never use? With this extension you can.

IE Tab- for those few times when a website requires IE, this extensions lets you load a page inside Firefox, with the IE engine.

Added Functionality:

FlashGot- This handy add-on will allow you to download files in bulk quickly and easily. It supports a number of download managers, and includes a feature to download embedded media.

Secure Login- Firefox will remember your passwords, and this extensions will let you login with the click of a button, or press of a key.

FireFTP- a very easy to use FTP client that can be opened right inside of Firefox, allowing you to upload files, then view them instantly.

Foxmarks- nice little extension to synchronize your bookmarks across multiple computers, highly configurable.

Tab Mix Plus- adds a huge number of options to the way tabs work and look in Firefox. If you want to customize tabs, this is your extension.

Tempomail- interesting extension that allows you to create a temporary email address that forwards itself to your inbox. User chooses the lifespan of the mail address.

Customize Google- if you use Google frequently, you’ll want to install this extension, as it allows you to tailor every Google page to your exact specifications.

FullerScreen- allows Firefox to go into a truly fullscreen view. Good for users who watch movies or television online. Can also be used for presentations through Firefox.