Today there are thousands of add ons available in market. I have selected some must have add ons for Firefox.

You may Left Click to install OR Right Click & then select “Save As” to Download.

1. Noia 2.0 (eXtreme)

A wonderful theme with stylish icons. It also includes icons for third party add-ons. This is one of my best addons. It has very stylish look, easy to use interface & many more features.

Click Here To Install Or Download

2. Firefox Showcase

Showcase provides a new way to manage your Firefox tabs and windows by showing them as thumbnails in a single window, tab or sidebar. Includes a find bar that will filter the thumbnails, and the capability to select the thumbnails in the same way you would select files in your system.

Click Here To Install Or Download

3. Greasemonkey

Allows you to customize the way a web page displays using small bits of JavaScript. A very important plugin if you want to customize web pages in the way you want. This plugin is also good for orkut users. just find the correct script, install it & you are ready to customize the page.

Click Here To Install Or Download

4. Internet Explorer Tab

IE Tab – an extension from Taiwan, features: Embedding Internet Explorer in tabs of Mozilla/Firefox.

This is a great tool for web developers, since you can easily see how your web page displayed in IE with just one click and then switch back to Firefox.

Click Here To Install Or Download

5. Minimize to tray

Minimizes Mozilla windows into the system tray. Also includes a right clickable tray icon menu to further load only the windows you want visible.

MinimizeToTray’s extension options allow you to configure your desired behavior. The three options are:
1) Always minimize to the tray instead of to the taskbar.
2) Minimize to tray on close.
3) Require a double click to restore from the tray.

Click Here To Install Or Download

6. Tab Mix Plus


Tab Mix Plus enhances Firefox tab browsing capabilities. It includes such features as duplicating tabs, controlling tab focus, tab clicking options, undo closed tabs and windows, plus much more. It also includes a full-featured session manager with crash recovery that can save and restore combinations of opened tabs and windows.

Click Here To Install Or Download

7. Image Zoom

Adds zoom functionality for images. Easily zoom in, zoom out, fit image to screen or set custom zoom on individual images within a web page. All this can be done by using the context menu or a combination of mouse buttons and scroll wheel. Handy to see the finer details of smaller pics or to make very large pics fit within your screen

Page Zoom – Zoom all images on a web page with a single command or make all images on a page zoom with the browsers text zoom feature.
Click Here To Install Or Download

8. MediaPlayerConnectivity

Allow you to launch embed video of website in an external application with a simple click

* Replace the stream by a simple button
* Add a download icon in the status bar
* And/Or add links to right click
* Works with RealMedia, QuickTime, WindowsMedia, Playlists, Flash, background sounds, Nullsoft video, Shockwave
* Allow the use of any capable media player (with command line support)
* Support Media Metafiles (ram, rpm, wmv, wm, wma, asx, asf, …)
* Activable per media format
* AutoPlay feature : automatically start to play the first media
* Configuration wizard
* SmartPlay : automatically search and choose the best source using metafile (‘+’ icon) if exist
* List all media links on the web page
* Use a sidebar for lists
* Multilingual

Click Here To Install Or Download

Source :- All the above data is taken from Mozilla’s site. These add ons are copyright to their respective owners. You can find their names & more add ons here.