Reminder Fox Firefox Add-on
ReminderFox displays and manages lists of date-based reminders and ToDo’s. ReminderFox does not seek to be a full-fledged calendar. In fact, the target audience is anybody that simply wants to remember important dates (birthdays, anniversaries, bills, etc) without having to run a whole calendar application. ReminderFox makes sure you remember all of your important dates via easy-to-use lists, alerts, and alarm notifications. Download here

Capture Fox Firefox Add-on
You can capture your screen and record your voice to make screencasts (tutorials, e-lessons, etc.). Download here

Pearl Crescent Page Saver Firefox Add-on
An extension for Mozilla Firefox that lets you capture images of web pages, including Flash content. These images can be saved in PNG or JPEG format. Using Page Saver, you can capture an entire page or just the visible portion. You can control the image capture process via a wide variety of settings, including the image file name and scale (e.g., save at 50% of original size). Download here

FireFTP Firefox Add-on
FireFTP is a free, secure, cross-platform FTP client for Mozilla Firefox which provides easy and intuitive access to FTP servers. Download here

Fast Video Download Firefox Add-on
Download video files from popular sites like YouTube, Dailymotion, Break.com and more. 100% Free! Download here

DownThemAll! Firefox Add-on
The first and only download manager/accelerator built inside Firefox! Download here

TorrentBar Firefox Add-on
BitTorrent File Search Toolbar for Firefox. Allows to search numerous sites in a matter of minutes for needed torrent files. Download here

Fast Dial Firefox Add-on
Fast Dial replaces blank tabs with a panel of thumbnails of your favorite sites. Download here

Greasemonkey Firefox Add-on
Allows you to customize the way a webpage displays using small bits of JavaScript. Download here

iMacros for Firefox
Automate Firefox. Record and replay repetitious work. If you love the Firefox web browser, but are tired of repetitive tasks like visiting the same sites every days, filling out forms, and remembering passwords, then iMacros for Firefox is the solution you’ve been dreaming of! ***Whatever you do with Firefox, iMacros can automate it.*** Download here

Blogging Add-ons

WordPress Helper Firefox Add-on
The Firefox extension WordPress Helper helps you working with WordPress by providing useful help and tools. The extension eases the fast and simple access to develop-relevant pages of the WordPress Codex. So you always have all the necessary help at your fingertips. It’s also possible to search after strings of text that is currently marked. Furthermore it’s possible to easily switch to WordPress backend of current site. More than that, a small Icon indicates wether the currently displayed website makes use of WordPress. Download here

Live Writerfox Firefox Add-on
Windows Live Writer is a new desktop application for composing blog posts to your blog service.
It blogs a page or selected text to Windows Live Writer. To use it you need to have Windows Live Writer installed on your machine. To add the “blog it” toolbar button, right click and customise the toolbar. And drag and drop the Live Writerfox button. Download here

Web Design & Development Firefox Add-ons

MeasureIt Firefox Add-on
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels. Download here

Colorzilla Firefox Add-on
Advanced Eyedropper, ColorPicker, Page Zoomer and other colorful goodies. Download here

Codetch Firefox Add-on
Get the feel of Dreamweaver in a Firefox extension. Edit your documents right next to your web pages as you surf. Download here

Web Developer Firefox Add-on
The Web Developer extension adds a menu and a toolbar to the browser with various web developer tools. It is designed for Firefox, Flock and Seamonkey, and will run on any platform that these browsers support including Windows, Mac OS X and Linux. Download here

Dust-Me Selectors Firefox Add-on
Dust-Me Selectors is a Firefox extension that finds unused CSS selectors. It extracts all the selectors from all the stylesheets on the page you’re viewing, then analyzes that page to see which of those selectors are not used. The data is then stored so that when testing subsequent pages, selectors can be crossed off the list as they’re encountered. You can test pages individually, or spider an entire site, and you’ll end up with a profile of which selectors are not used anywhere. Download here

View formatted source Firefox Add-on
Displays formatted and color-coded source and optional CSS information for each element. You can see exactly which CSS rules match for an element. The rules are displayed including file name and line number. The topmost element is that with the highest priority. Download here

JavaScript Debugger Firefox Add-on
Venkman is the code name for Mozilla’s JavaScript Debugger. Venkman aims to provide a powerful JavaScript debugging environment for Mozilla based browsers. Download here

Firebug Firefox Add-on
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… Download here

Pixel Perfect Firefox Add-on
Pixel Perfect is a Firefox/Firebug extension that allows web developers and designers to easily overlay a web composition over top of the developed HTML. Download here

Link Checker Firefox Add-on
Check the validity of links on any webpage. Download here

YSlow Firefox Add-on
YSlow analyzes web pages and tells you why they’re slow based on Yahoo’s rules for high performance web sites. Download here

Window Resizer Firefox Add-on
Resize your browser to various standard resolution sizes. Download here

IE View Firefox Add-on
Lets you load pages in IE with a single right-click, or mark certain sites to *always* load in IE. Download here

OperaView Firefox Add-on
Open pages in Opera from Firefox and Mozilla context menus. Very usefull for web developers. Download here

Social Media Add-ons

Yoono Firefox Add-on
In a single browser sidebar, Yoono users can interact with the best of the Web more than ever before by discovering, communicating, and sharing with friends across multiple networks and platforms all in one place. Users can stop wasting time checking for updates and visiting multiple networks and instead can start enjoying! Download here

Delicious Firefox Add-on
Delicious Bookmarks is the official Firefox add-on for Delicious, the world’s leading social bookmarking service (formerly del.icio.us). It integrates your bookmarks and tags with Firefox and keeps them in sync for easy, convenient access. Download here

Digg Firefox Add-on
The Digg Extension for Firefox allows you to interact with Digg (http://www.digg.com) and see information about the web page you are currently viewing while you use Firefox. Download here

StumbleUpon Firefox Add-on
StumbleUpon discovers web sites based on your interests, learns what you like and brings you more. Download here

Twitbin Firefox Add-on
Creates a sidebar on your firefox browser to allow you to communicate with twitter.com. Send and receive twitter messages from anywhere on the web. Download here

LinkedIn Companion for Firefox
LinkedIn is an online network of more than 25 million experienced professionals. LinkedIn helps you be more effective in your daily work and opens doors to opportunities by helping you develop and manage your network of business. Download here

MySpace Toolbar for Firefox
Easily navigate MySpace from anywhere on the web. Stay connected to MySpace.com with persistent login. Receive notifications with updating messages. Clean up messy profile pages with the “Simplify” button. Download here

Firefox Universal Uploader Firefox Add-on
This extension allows to upload/download files from your favorite websites using a simple interface. Download here

Fire.fm Firefox Add-on
Fire.fm is your direct access to the extensive music library on Last.fm. Listen to music related to your favorite artist, and discover new artists and music in the process. Listen to your friends’ favorite music. Find Last.fm users with musical taste similar to your own. Quickly access your favorite stations by just typing a few letters into the location bar. This is the ultimate add-on for the music junkie. Download here

meebo Firefox Add-on
Instant messaging across all major IM networks built right into Firefox. Download here

Google Add-ons

Gmail Manager Firefox Add-on
Allows you to manage multiple Gmail accounts and receive new mail notifications. Displays your account details including unread messages, saved drafts, spam messages, labels with new mail, space used, and new mail snippets. Download here

Better Gmail 2 Firefox Add-on
Add useful extra features and skins to Gmail, like hierarchical labels, macros, file attachment icons, and more. Download here

Google Toolbar for Firefox
View the Google pagerank of web sites, view backlinks, as well as access to all of Google’s services including, gmail, calendar, etc.Download here

• Glitches include:
• Crashing on close or restart – whenever an add-on update is applied and Firefox wants a restart or when closing the browser with many tabs open, I get the crash error message with option to send the info to Mozilla. I always do, they need that information!
• Some sites just don’t work: Since installing the current version of Firefox (v3.0.1) I have visited two different sites that just don’t work in Firefox! Dare I say it, they did work in IE 7. What is that about?

So I tweeted about my issues and was replied to almost immediately by firefox_answers. (a definite follow for Firefox users who Twitter)

firefox_answers told me that I needed to create a new Firefox profile. (Your Firefox profile is a folder full of files that sits on your hard drive that contains all of your personal information such as passwords, preferences, viewing history, add-on preferences, etc.) I have to be honest, when I first looked at the instructions, I was tempted to just deal with my issues but after doing it, it really wasn’t that time consuming. So not taking away from Firefox, here are the links in order of what you should do to create, delete, or rename your Firefox profile.

• Backing up your Firefox profile – Instructions on backing up your Firefox profile
• Managing your Firefox Profile – Learn how to create, delete, and rename your Firefox profile
• Recovering important data from an old Firefox profile – Information regarding which files to transfer to your new profile from your old one

To be honest, this did not fix my problem however I am not willing to disable ANY of my add-ons as I use every one of them and being that my add-ons are probably the cause, I will just continue to submit my crashes to Mozilla and install updates and maybe one of these days my issues go away… But if your add-ons aren’t that important to you or you are willing to take the time to enable each individual add-on to find the problem (i have way to many add-ons to do this) then this will probably fix any issues you may have with Firefox. Just follow the instructions on the Recovering important data from an old Firefox profile link. Good luck!