Christian Cantrell

Adblock has become essential to me:
https://addons.mozilla.org/extensions/moreinfo.php?id=10&application=firefox

FoxyTunes - Control iTunes in the browser
MeasureIt - Listed above
Adblock - Great for getting rid of banner ads
Nuke Anything - Remove any item from a page
Macromedia News - That's how I get here
Re-use homepage - if you're on a blank page it won't open another tab for content
IEView - open the current page in IE

HTML Validator/Web Developer/Live HTTP Headers/Aardvark are very useful for web development.
My additions are FlashGot, ColorZilla, Fangs, Google Pagerank Status, BetterSearch and Gmail Notifier.
Actually I came here using the Macromedia News extension.

Bookmarks Synchronizer - Other than Web Developer, this is by FAR the best extension.

https://addons.mozilla.org/extensions/moreinfo.php?application=firefox&category=Bookmarks&numpg=10&id=14

SessionSaver to save tabs/windows when Firefox crashes, or you can save them yourself on demand.

Sage, my choice for RSS feeds, but will look at your recommendation.

Also: ForecastFox (weather), Macromedia News extension, IEview, Tabbrowser Preferences, Download Statusbar, PDF Download (great!), FoxyTunes, ColorZilla, SETI stats (hehe).

Most of what you use AND
Greasemonkey (ability to mod pages via javascript, like add a delete button to gmail...cool!)
IE View (Open page in IE)
Query TO (highlight text and send to search engine)
Colorzilla (ability to view page color codes)
Fetch Text Url (opens non link urls in browser)
AND Macromedia News extension

Most of yours, plus:

* platypus for changing pages around (like aardvark)
* greasemonkey for saving platypus scripts
* adblock for those really annoying sites
* forecastfox to see if it's worth going outside
* bugmenot for quick logins
* tabbrowser preferences to tweak the interface
* miniT drag+indicator for moving tabs around
* colorzilla for design work color matching

-nathan strutz

I also like these:

Autocopy - automatically copies selected text to the clipboard

Resizeable Textarea - allows you to resize text area controls on HTML forms

miniT - allows you to move tabs around

ScrapBook:
never leave 127.0.0.1 without it.

Web Developer - amazingly useful set of tools!

Macromedia News - helps keep me up-to-date.

ChromEdit - useful for messing with Firefox customization.

HTML Validator - great way to educate yourself on standards :)

Greasemonkey - for the Gmail, IMDB and Netflix tweaks (so far).

Fusebox Reload - if you write Fusebox 4.x apps, this is so useful: prompts for password and then reloads the current page with the fusebox.load / fusebox.parse attributes.

1. Sage - rss feed reader - GREAT
2. LiveLines - add RSS feeds to rss readers other than live bookmarks (see Sage)
3. Web Developer
4. Download Statusbar
5. Autofill - fills out forms kind of like the google toolbar in IE
6. ieView
7. Mozilla Calendar
8. BBCode - adds formatting to the context menu
9. Duplicate Tab
10. FLST - focus last selected tab
11. Quick Tab Pref Toggle - single window mode; kind of like tab prefs made easy
12. FANGS - screen reader emulator; great for getting an idea for how the visually impaired encounter your site
13. JavaScript Debugger
14. Forecase Fox - i have no windows near/in my cube
15. ColorZilla
16. SpellBound
17. HTML Validator
18. GreaseMonkey - for Gmail Smart Delete button and Book Burro; book burro is fantastic!
19. Live Http Headers - great for debugging RPC stuff (AJAX)
20. Adblock - just added recently, really cleans up sites like CNN and ESPN
21. Document Map - displays the current page documents structure in the sidebar

The one I use most often turns out to be QuickNote, where I take notes on webpages throughout the week.

After that it's WebDeveloper to get an idea of how pages are constructed.

There are others I use on occasion (ConQuery, ChromEdit, Fangs, etc), but the above two have had the biggest impact for me day-to-day.

(I haven't gotten into GreaseMonkey yet -- have been tracking it, but haven't put time into testing it because it's for a special audience and usage is still evolving.)

jd/mm

Sage, GreaseMonkey, GoogleBar, Web Developer, User Agent Switcher, SecurePasswordGenerator, MM News, Javascript Debugger, Fusebox Reload, ColorZilla, ForecastFox, HTML Validator (based on Tidy), Resizeable Textarea, Aarkvark and PubSub Sidebar.

Web developer
Autofill
Gmail Notifier
Download Manager Tweak
Tabbrowser Preferences
FLST
Hide Searchbar
Bloglines Toolkit
LiveLines
FlashGot
Fusebox Reload
ColorZilla
Dict
Html Validator
FormFox
Unread Tabs
FoxyTunes
ChromEdit

- Web Developer's Toolbar
- Macromedia News (natch)
- FoxyTunes (altho I use Synergy/Mac utility more often)
- Bookmark Synchronizer (it RULES)
- Aardvark
- FeedYourReader

I had a lot more installed a few weeks back but FF started crashing, so I reverted back to this set- which is pretty solid now. But even a crashing Firefox beats IE hands-down, in my opinion... ;-)

"View Formatted Source" - does nice formatting and color-coding, and the CSS info feature is really amazing!

I would like to add

Hit-a-Hint :enable keyboard shortcuts (space + number) to visit links rather than clicking - useful with laptop without mouse!

My additions are FlashGot, ColorZilla, Fangs, Google Pagerank Status

ColorZilla
Dict
Html Validator
and Google Pagerank Status

View Formatted Source

Hide Searchbar
Bloglines Toolkit
LiveLines
FlashGot
Fusebox Reload
ColorZilla