25 Best and Most Useful Add-Ons for Firefox – You Should Install

Mozilla Firefox, undoubtedly the best browser is so famous for its Add-ons. Here is a list of 25 Best and Most useful Add-ons for Firefox 3.  The add-ons are small applications for the browser that will enhance the browsing experience and will also perform many useful operations. There are many add-ons available for Firefox but I have handpicked best of the best and most Popular and Useful add-ons that you should have installed.

You can check the Tips and Tricks of Firefox to Make Firefox Faster. You can even Optimize Firefox for Best Performance. You can go to the particular add-ons page by clicking on the name of the add-on. The list of the 25 best add-ons will be as follows..


All-in-One Sidebar :

All-in-One Sidebar (AiOS) is an award-winning sidebar control, inspired by Opera’s. It lets you quickly switch between sidebar panels, view dialog windows such as downloads, extensions, and more in the sidebar, or view source or websites in the sidebar.

Down Them All :

The first and only download manager/accelerator built inside Firefox. It is all you can desire from a download manager: it features an advanced accelerator that increases speed up to 400% and it allows you to pause and resume downloads at any time.

Interclue :

Ever wanted to know what was behind the link before you clicked? Interclue tells you everything you need to know before you open yet another tab. Small icons appear on mouseover to warn you about dead links, Malware or Phishing Sites, etc, and for any valid links Interclue provides compact link previews, relevant extra information and useful next action buttons.

Cool Previews :

CoolPreviews (formerly known as Cooliris Previews) gives you the power to browse and share Web links and rich media faster. Just mouse over any link, and the preview window immediately appears to show you the content. To email it, just click.

IE Tab :

It is used for 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.


AdBlock Plus :

Ever been annoyed by all those ads and banners on the internet that often take longer to download than everything else on the page? Install Adblock Plus now and get rid of them. It will block most advertisements fully automatically.

FoxyProxy :

FoxyProxy is an advanced proxy management tool that completely replaces Firefox’s limited proxying capabilities. It offers more features than SwitchProxy, ProxyButton, QuickProxy, xyzproxy, ProxyTex, TorButton, etc.

No Script :

The best security you can get in a web browser! Allow active content to run only from sites you trust, and protect yourself against XSS attacks. It allows JavaScript, Java and other executable content to run only from trusted domains of your choice.

Secure Login :

Secure Login is a login extension for Mozilla Firefox integrated password manager. Its main feature is similar to Opera’s (the browser) Wand login.


Fireshot :

FireShot is a Firefox extension that creates screenshots of web pages. Unlike other extensions, this plugin provides a set of editing and annotation tools, which let users quickly modify captures and insert text and graphical annotations. Such functionality will be especially useful for web designers, testers and content reviewers.

FoxyTunes :

FoxyTunes lets you control almost any media player and find lyrics, covers, videos, bios and much more with a click right from your browser. It supports almost every music player like Winamp,itunes etc.

G Space :

This extension allows you to use your Gmail Space (4.1 GB and growing) for file storage. It acts as an online drive, so you can upload files from your hard drive and access them from every Internet capable system.

Cooliris :

Full-Screen, 3D — Cooliris (formerly known as PicLens) transforms your browser into a visually stunning experience for searching, viewing, and sharing online photos and videos. Its “3D Wall” lets you effortlessly search and zoom your way around thousands of images, videos, news feeds, sports feeds, and more.

Video Download Helper :

The easy way to download and convert Web videos from hundreds of video sharing sites. It is a tool for web content extraction. Its purpose is to capture video, audio and image files from many sites.


Blog RovR :

If you don’t have time to read ALL those Blogs! RovR does it for you. It fetches posts from your favorite blogs about anything you’re browsing, and shows you summaries you can open read posts without leaving the web page you were on. It also suggests popular items AND lets you Twitter about any site you’re on too.

Chat Zilla :

A clean, easy to use and highly extensible Internet Relay Chat (IRC) client. It provides all the usual IRC client features: multiple servers, a built-in list of standard networks, easy searching and sorting of available channels, logging, and DCC chat and file transfers, plus easy customization with JavaScript plug-ins and CSS styling.

Locator :

It is used to Locate highlighted address on Google map: simply highlight the address, right click with mouse, select ‘Locate on Google Map’ in popup menu and your place will be shown on Google map.

Reminder Fox :

ReminderFox displays and manages lists of date-based reminders and ToDo’s. It does not seek to be a full-fledged calendar. It makes sure you remember all of your important dates via easy-to-use lists, alerts, and alarm notifications.

SamePlace :

Extensible instant messaging client based on the XMPP (Jabber) protocol. Accesses Jabber, GTalk, Twitter, MSN, AIM (and more, via gateways). It REQUIRES the xmpp4moz extension (download it from http://addons.mozilla.org/firefox/3632/ )


FireBug :

Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page.

FireFTP :

FireFTP is a free, secure, cross-platform FTP client for Mozilla Firefox which provides easy and intuitive access to FTP servers.It includes more advanced features such as: directory comparison, syncing directories while navigating, SFTP, SSL encryption, search/filtering, integrity checks, remote editing, drag & drop, file hashing, and much more!

Stylish :

Customize the look of the application and of websites with Stylish, a user styles manager. User styles empower your browsing experience by letting you fix ugly sites, customize the look of your browser or mail client, or just have fun.

SQLite Manager :

Manage any SQLite database on your computer. An intuitive hierarchical tree showing database objects. Helpful dialogs to manage tables, indexes, views and triggers. You can browse and search the tables, as well as add, edit and delete the records. Facility to execute any sql query.

Web Developer :

Adds a menu and a toolbar with various web developer tools. It is very much useful for the developers to access different tools they need.

Greasemonkey :

Allows you to customize the way a webpage displays using small bits of JavaScript. You can get hundreds of scripts, for a wide variety of popular sites, are already available at http://userscripts.org.

Along with these there are many such add-ons which will provide you with various functions to make your browsing experience  interesting. Share your favourite Firefox add-ons here. Bookmark and share this post, if you like and Happy Browsing..!!


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