My Favorite and Top Firefox Add-Ons!

Here is a list of my favorite Firefox add-ons that I use very often and just can’t imagine doing so many things on Internet that I do everyday without their assistance.

AD-Blocker

Adblock Plus - Very helpful to prevent most of the annoying ads from loading up in the browser. Backed up by an automatically updated Filter list of Ads, am sure you will find it useful. I strongly recommend this to people with very slow Internet connections (are there any?)
Get it @ https://addons.mozilla.org/firefox/1865/

Bookmarks

del.icio.us Bookmarks - Use this extension to automatically add bookmarks to your del.icio.us page. (For those who don’t know about del.icio.us) it is an online bookmarking website, to which you can post your bookmarks from your browsers also and can be viewed from any other system. Example is my del.icio.us page.
Get it @ https://addons.mozilla.org/firefox/3615/

Internet & Web Development

[Firebug] - Firebug is an amazing Firefox add-on that lets you edit, debug, and monitor CSS, HTML, and JavaScript - live in any web page. The entire add-on is under 300k in size.

Web Developer - One of my personal favorites, I use it to look at the structure of any given website in the browser. It is capable of outlining block level elements such as DIV. You will no longer need to copy the source and paste in HTML editor to understand the anatomy of a website.
Get it @ https://addons.mozilla.org/firefox/60/

FireFTP - FireFTP is a free, secure, cross-platform FTP client for Mozilla Firefox. Though you may not find it as easy to use as a commercial FTP client, I still recommend it if you are looking for a free alternative.
Get it @ https://addons.mozilla.org/firefox/684/

IE Tab - Another great extension that lets you change the rendering engine for any given URL and instead of using the native Firefox rendering engine, it will use IE to open the page in a tab inside Firefox. Great help for developers who wants to see how their pages show in both the browsers. You can keep switching between rendering engines as and when you like.
Get it @ https://addons.mozilla.org/firefox/1419/

Gmail Space allows you to use your Gmail Space for storing your files, just like an online drive.

Performance

Fasterfox - Fasterfox allows you to tweak many network and rendering settings such as simultaneous connections, pipelining, cache, DNS cache, and initial paint delay. All this helps in faster browsing.
Get it @ https://addons.mozilla.org/firefox/1269/

Downloads

DownThemAll! - It’s a download manager for Firefox browser. It features an advanced accelerator that increases speed up to 400% and it allows you to pause and resume downloads at any time!
Get it @ https://addons.mozilla.org/firefox/201/

Download Statusbar is a browser extension that allows you to keep track of ongoing and completed downloads in a hide-away status bar.

VideoDownloader adds a small icon on the status bar at the bottom of your firefox window, and a toolbar button. It will let you download the video you are watching. Many popular sites such as Google video, Youtube, metacafe and many other supported.

FlashGot will let you download one link, selected links or all the links of a page, using the external download managers.

PDF Download will let you decide if a PDF file should be opened in a browser window or downloaded as an external file to open with PDF reader.

I will keep this list updated as and when I discover more and useful Firefox extensions.