With Firefox 2 packing many new features already, I've had to adjust my list to better represent the updates I want. The add-ons listed here will block ads, download videos, notify you when you have mail, or just help you make web pages. Each add-on listed below is an excellent addition to the browser in its own way.

Full list: Post the guide, not the link.

A few that I use in FF are -

Search and Go - useful for copying and pasting web addresses
Gmail Space - which lets you use Gmail for storage
FoxClocks - timezones around the world

Cheers
Riscy

My recommendations:

IE Tab (for pages that will not work in FF, such as those that use activeX. It is faster than opening IE)

PDF Download (lets you choose whether to download or open pdf files which you stumble upon on the net)

Customize Google

FlashGot (for large downloads if you have a download manager)

NoScript
AdBlock Plus
Video Downloader
CuteMenus

Come on guys, try and keep this on topic. It's about Firefox add ons, not about what browser is best and who said what.

I'd add All In One sidebar to that list, it's great even if you don't use the sidebar since you can have a toolbar under the tabs or pretty much anywhere else.

adblock! i love not seeing those annoying ad banners all over the place.

i usually just look through the highest rated and see which ones are useful. There are so many of them.. its wonderful.

You all forgot to mention one of the best add ons for firefox..... Download StatusBar, its a really good add-on for ff, it replaces the default download box, for a status info and progress at the botton of the browser... my favorite

Wow... Adblock Plus is an awesome extension!

Ok guys, the thread is obviously about Firefox 2 and it's add-ons. Keep the 'get opera' trolling out.

I definitely agree with installing Adblock Plus, DownThemAll!, and Video Downloader.

Adblock plus
Flashblock

All in one side bar does not currently support FF2.

Adblock

Down them all

Mouse Gestures and SessionSaver.

AdBlock Plus
NoScript
DownThemAll!

I have way too many extensions but I use them all...

Adblock; Allow Right Click; Customize Google; Dictionary Search; Download Status Bar; Gmail Notifier; IE View; Image Toolbar; NoScript; Password Exporter; Save Image in Folder; Undo Closed Tab.

I used to use TabMixPlus but it don't work with 2.0

The best new feature of Firefox is the spel cheeker. Works a treat even though it doesn't recognize "Firefox" as a correctly spelt word.

I like to keep them to a minimum, using only gmail notifier and just recently, adblock plus

Now that most of the extensions (addons) are updated, I am going to be adding new ones to the list.

FasterFox
BugMeNot
Adblock Plus with Filterset.G
Image Zoom
Tabbrowser Preferences
FlashGot

Generated: Sat Oct 28 2006 05:30:14 GMT+0100 (GMT Standard Time)
User Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1) Gecko/20061010 Firefox/2.0
Build ID: 2006101023

Enabled Extensions: [12]
- Adblock 0.5.3.043
- Adblock Filterset.G Updater 0.3.0.4
- BBCodeXtra 0.2.5.6
- Gmail Manager 0.5.3
- Google Toolbar for Firefox 2.1.20060807W
- IE Tab 1.1.1.4
- lget 0.3
- MR Tech Local Install 5.3.1.1 - Made This
- NoScript 1.1.4.5
- PDF Download 0.7.6
- Talkback 2.0
- VideoDownloader 1.1.1

Disabled Extensions: [1]
- Tab Mix Plus 0.3.0.5 [Not supported yet, except a beta version]

Fasterfox still seems incompatible with Firefox 2

hehe

Try "Super DragandGo" extension. This essentially lets you drag and drop a link to open in a new tab. If you have used Maxthon or Avant, you will know what I mean.

Just use it once and you may be pleasantly surprised by its usefulness. I just can't browse without Super DragandGo. The official website can be found at https://addons.mozilla.org/firefox/137/

It does now: http://firefox.exxile.net/aios/

I have a ton of extensions installed. 136 to be exact... thats over a hundred reasons why I wont switch to other browsers anytime soon... but heres a few that werent yet mentioned that I think are very useful and relatively unknown.

Generated: Fri Oct 27 2006 23:23:11 GMT-0700 (Pacific Standard Time)
User Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1) Gecko/20061010 Firefox/2.0
Build ID: 2006101023

Enabled Extensions: [77]
- BetterSearch 1.12 - Enhances Google, A9, MSN, Yahoo, Answers.com (web results), AllTheWeb, del.icio.us, ask.com (Ask Jeeves), Clusty.com, Vivisimo.com, Dogpile and Simpy.com by adding previews (thumbnails) and Amazon product info (images, prices) as well as new special links to the search results. (This extension was formerly known as McSearchPreview.)
- De-ImageShack 0.6.0 - Converts ImageShack page links to image links
- Dictionary Tooltip 0.9.2.5 - Press ctrl+shift+D (or) double-click after selecting a word to see its meaning.
- Drag de Go 0.2.5.1 - This extention allows you to execute several commands using Drag and Drop Gesture. Basically an updated and more powerful version of Super Drag and Go.
- dragdropupload 1.5.21 - This extension helps you to upload files
- Favicon Picker 2 0.3.3 - This extension adds UI for replacing bookmark icons.
- Forecastfox Enhanced 0.9.3.1 - Get international weather forecasts and radar images and display it in any toolbar or statusbar with this highly customizable extension.
- Gmail Manager 0.5.3 - Gmail accounts management and new mail notifications.
- Greasemonkey 0.6.6.20061017.0 - A User Script Manager for Firefox
- gTranslate 0.3.1 - Translates the selected text via Google Translate.
- Image Zoom 0.2.7.20060910 - Adds zoom functionality for images
- Linkification 1.3.0 - Converts text links into genuine, clickable links.
- LiveClick 0.2.0 - Turn livemarks into clickable bookmarks.
- MediaWrap 0.1.6.3 - Enable Firefox to play media (e.g. Wmplayer, Rmplayer, QtPlayer and FlashPlayer) embedded by ActiveX objects in webpages using the appropriate media player via plugins, the very way Firefox supported, but without the security problems in company with ActiveX.
- Menu Editor 1.2.3 - Customize application menus
- Organize Status Bar 0.5 - Organize your status bar icons.
- Paste and Go 2 0.3.4.4 - Paste Text and Load/Search It Immediately
- Pearl Crescent Page Saver Basic 1.2 - Save an image of a web page to a file.
- QuickNote 0.6.0.3 - A note taking extension with advanced features
- Reliby 1.1.0 - Reload all your Live Bookmarks
- Resizeable Textarea 0.1c - Resize textareas to your needs.
- Searchbar Autosizer 1.1.2 - Expand the searchbox as you type
- Show Image 0.4.1 - Adds context menu entry to reload images that failed to show on page.
- Stylish 0.4 - Customize the look of websites and of the user interface.
- Text to Image 1.1.1 - Convert text URLs and links to images into thumbnails of the said image.
- UnPlug 1.4.4 - UnPlug is an extenstion which lets you save video and audio which is embedded on a webpage. UnPlug is different from the VideoDownloader extension - The Videodownloader extension takes you to the videodownloader.com website, which then tells you where the video is kept based on the website's address. UnPlug will search what's on the page for where the video is using a few different methods. It can also ask videodownloader.com or keepvid.com for their help too.
Disabled Extensions: [59]
- Internote 2.1.1 - Persistent sticky notes for Firefox.
- Tiny Menu 1.2.3 - Replace the standard menu bar with a tiny menu popup.
- translator 1.0.2 - Website translation extension.

Total Extensions: 136

Installed Themes: [2]
- Firefox (default)
- Mostly Crystal 2.0.0.2 - A Crystal theme

ummm... holy crap?

Adblock Plus
Adblock Filterset.G Updater
Flashgot
Undo Closed Tabs Button

And before version 2.0 I also used Session Manager, but now what i used it for is built in.

Hehe call me an extensions addict or whatever, but I just like how all those extension make browsing such a pleasant experience. And the only performance impact all of them do is make startup time slower and add maybe 40Mb ram usage. My firefox never takes up more than 200MB ram when browsing with like 10 tabs. Resources is not an issue for me as you can see from my specs...

Careful, Neowin staff doesn't take kindly to users mentioning they use ad-blocking measures. My warn level reflects this...

Adblock and Noscript are arguably the 2 best extensions for Firefox. Nobody is talking about specifically blocking Neowin adds, they're talking about using very useful extensions in general.

Im going to wait till they(whoever they are)update tabmix plus to work in FF2 before i upgrade to FF2, such a fine addition to all the other plugins so far

Session Saver, Tab browser Preferences, Download Status bar, IE View, Foxy Tunes, Mouse Gestures, FireFTP, GSpace, Customize Google.

All of these are awesome extensions

I didn't see these ones mentioned before (so please accept my apologies if they've already been posted)

Auto Copy
- Allows you to highlight text and it automatically copies it to the clipboard. It can be turned on or off via an icon in in the Status Bar.

Add Bookmark Here
- Adds a link to the root of each folder in your Bookmarks.

dotCOMplete
- Allows you to customise keyboard short cuts.
- For example I like to have SHIFT+ENTER automatially fill out .net (e.g. type in "neowin" and then use the shortcut to add the www. and .net part around the text).

myurlbar_a
- Typing a name in the Address bar will automatically search your Bookmarks and provide a quick link.

Except for the default (Talkback and domInspector), the only other extension I use is Undo Closed Tabs Button.

+1

I prefer to use a minimal set of essential plugins. Currently I use Mouse Gestures (1.5.2), FlashGot (1.5.97) and Adblock (0.5.3.043) - those extensions mean my time is a lot more productive.

This are my extensions and I can say that Firefox works like a charm. I love Firefox!

Enabled Extensions: [33]
- Adblock Filterset.G Updater 0.3.0.4 - Synchronizes Adblock with Filterset.G
- Adblock Plus 0.7.2.1 - Ads were yesterday!
- All-in-One Sidebar 0.7 - Sidebar control with award-winning user experience!
- BBCode 0.4.1.3 - Adds Formating (BBCode/HTML/XHTML/etc.) to the context menu for Blogs and forums like Mozillazine (PHPBB and others).
- BugMeNot 1.3 - Bypass compulsory web registration with the context menu via www.bugmenot.com.
- ChatZilla 0.9.75 - A clean, easy to use and highly extensible Internet Relay Chat (IRC) client.
- Compact Menu 1.7.4.5 - Duplicates the menubar on the toolbar as a menu of menus.
- Context Search 0.3 - Expands the context menu's 'Search for' item into a list of search engines.
- CuteMenus - Crystal SVG 1.6 - Adds icons to all menu items.
- Dizionario italiano 3.0
- DOM Inspector 1.8.1 - Inspects the structure and properties of a window and its contents.
- Download Embedded 0.5 - Downloads all embedded objects on a webpage.
- Download Statusbar 0.9.4.2 - View and manage downloads from a tidy statusbar
- FlashGot 0.5.97 - Enables single and massive ("all" and "selection") downloads using the most popular external download managers for Windows, Mac OS X, Linux and FreeBSD (dozens currently supported, see Extension's Home Page for details). FlashGot offers also a Build Gallery functionality which helps to synthetize full media galleries in one page from serial contents originally scattered on several pages, for easy and fast "download all".
- IE Tab 1.1.1.4 - Enables you to use the embedded IE engine within Mozilla/Firefox.
- Image Zoom 0.2.7 - Adds zoom functionality for images
- Locale Switcher 2.0 - Displays a menu item for switching the application locale.
- Long Titles 1.2.3 - Prevents tooltips break
- Menu Editor 1.2.3 - Customize application menus
- MinimizeToTray 0.0.1.2006102615+ - Minimizes Mozilla windows into the system tray
- MR Tech Local Install 5.3.1.1 - Local Install power tools for all users. (en-US)
- Password Exporter 1.0.5 - Export and import your saved passwords between computers.
- Performancing 1.3 - A full featured blog editor that sits right in your Firefox browse and lets you post to your blog easily.
- Plain Text to Link 1.5.20060124 - Handle highlighted text with a right click!
- Romanian Dictionary 1.0.0
- ScrapBook 1.2.0.6 - Helps you to save Web pages and organize the collection.
- Searchbar Autosizer 1.1.2 - Expand the searchbox as you type
- Tab Mix Plus 0.3.49.061009 - Tab browsing with an added boost.
- Translate 0.6.0.8 - Translate web pages and/or selected text to different languages
- Update Notifier 0.1.4 - Notifies you when updates are available for your extensions and themes.
- VideoDownloader 1.1.1 - Download videos from Youtube, Google, Metacafe, iFilm, Dailymotion... and other 60+ video sites ! And all embedded objects on a webpage (movies, mp3s, flash, quicktime, etc).
- Wizz RSS News Reader 2.1.6 - A fairly good RSS and Atom news reader.
- Zoomy 2.0 - Toolbar buttons to change text size

My Firefox Information

Last updated: Sun, 29 Oct 2006 00:56:53 GMT
User Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1) Gecko/20061010 Firefox/2.0

Extensions (enabled: 10, disabled: 0; total: 10)

• BBCodeXtra 0.2.5.6
• Bookmarks Menu Button 0.4.1
• Compact Menu 1.7.2.2
• Download Statusbar 0.9.4.3
• Gmail Manager 0.5.3
• Image Toolbar 0.6.4
• InfoLister 0.9f
• MinimizeToTray 0.0.1.2006102615+
• Super DragAndGo 0.2.6.1
• Tab Clicking Options 0.6.8

Themes (3)

• Firefox (default)
• Tangerine Firefox Theme
• Tango Firefox Theme [selected]

Plugins

• Java™ 2 Platform Standard Edition 5.0 Update 6
• Microsoft® DRM
• Mozilla Default Plug-in
• QuickTime Plug-in 7.1.3
• RealPlayer Version Plugin
• RealPlayer™ G2 LiveConnect-Enabled Plug-In (32-bit)
• Shockwave Flash
• Shockwave for Director
• VLC multimedia plugin
• Windows Media Player Plug-in Dynamic Link Library

-Rich-

- Adblock Plus 0.7.2.1
You don't need an automatic filter updater, just configure it once and the n every few weeks or so

- Download Statusbar 0.9.4.3

- DownThemAll! 0.9.9.7
I don't need it often but i sure comes in handy when downloading pdfs or something from a professor's website

- Drag de Go 0.2.5
Be sure to check this extension out! You can drag and drop text, links, images in any direction and then open the url, save the image, searxh for the text in your favourite search engine and much more.

- Greasemonkey 0.6.6.20061017.0
Trying it out. Still trying to find any really good userscripts.

- MenuX 0.2.4.5
Much, much better then CompactMenu. More Options, it looks better...

- MR Tech Local Install 5.3.1.1
To get rid of max version test, archive updated extensions

- NoScript 1.1.4.5
I'm pretty paranoid. And it sure blocks many nasty scripts

- Tab Mix Plus 0.3.0.61001
FF2 really improved on tab browsing, but there are some features that come with TMP that FF2 still lacks. (like Tab activation by mouse hovering, set tab size to 100px)

Adblock PLus
Chatzilla
Cutemenus
Download Statusbar
Downthemall
Gmail Notifier
IEtab
Splash
Stumbleupon
Videodownloader

Adblock Plus
CustomizeGoogle
Foxmarks Bookmark Syncronizer

Thats all im using and always have done except i used to use stylish till i found its quicker to use userchrome.css Might see what greasemonkey has in store!

Generated: Sat Oct 28 2006 22:34:48 GMT-0700 (Pacific Standard Time)
User Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-CA; rv:1.8.1) Gecko/20061010 Firefox/2.0
Build ID: 2006101023

Enabled Extensions: [25]
- Adblock Plus 0.7.2.1
- Add N Edit Cookies 0.2.1.0
- BetterSearch 1.13
- Canadian English Dictionary 1.0.1
- ChatZilla 0.9.75
- ColorZilla 0.8.3.1
- CustomizeGoogle 0.54
- DOM Inspector 1.8.1
- Download Statusbar 0.9.4.3
- Dr.Web anti-virus link checker 1.0.14
- Html Validator 0.7.9.5
- IE View Lite 1.2.5
- JavaScript Options 1.2.4
- Linkification 1.3.0
- MR Tech Local Install 5.3.1.1
- NoScript 1.1.4.5
- OperaView 0.6
- Organize Status Bar 0.5
- PopupSound 0.1.5
- ShowIP 0.8.05
- Tab Mix Plus 0.3.49.061009
- Talkback 2.0
- Text size toolbar 0.6
- UI Tweaker (Formerly Toolbar Cleanup) 1.7.0
- Web Developer 1.0.2

Installed Themes: [1]
- Firefox (default)

Installed Plugins: (9)
- 2007 Microsoft Office system
- Adobe Acrobat
- Java™ 2 Platform Standard Edition 5.0 Update 9
- Microsoft® DRM
- Mozilla Default Plug-in
- QuickTime Plug-in 7.1.3
- Shockwave Flash
- Shockwave for Director
- Windows Media Player Plug-in Dynamic Link Library

I want Fasterfox to work with my 2.0, is there an update yet?

Works fine with Nightly tester Tools http://users.blueprintit.co.uk/~dave/web/firefox/nightly

yes but I do not want to be using that.

Is there a particular reason? I have it installed just so that I can disable the compatibility checking. Usually the extension works just fine, it's just that the author of the extension didn't program the OK for some version numbers.

I just don't like using extensions if I don't need too.

Well, you have to brake some eggs if u want to make an omelet!

You can use this method instead. No extensions needed.

Ad muncher Browser Extension
All-in-one Gestures [is this better than Mouse Gestures?]
All-In-one sidebar
Auto Copy
Compact Menu
Copy Plain Text
Dictionary Tooltip
Disable Targets for Downloads
Foxy Proxy
Gmail notifier
Groowe Search toolbar
Launchy
Linkification
Menu Ediot
Mr Tech local install
NoScript
Open Download
Spoofstick
TabMixPlus
unhide Password
Video Downloader