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Ask HN: your favorite obscure Firefox extensions?

Working definition: anything that's not the first page of popular extensions.

Autocopy - automatically copy selected text to clipboard

Googlepedia - wikipedia results along with google searches

AutoPager - breaking my own rule, but this one's awesome

( 29 comments | 17 points | on HN )
Re:Ask HN: your favorite obscure Firefox extensions? by windsurfer on Saturday May 30, 2009 @05:17PM (#634101)
Did you know that Autocopy just changes "clipboard.autocopy" in about:config to true?
Re:Ask HN: your favorite obscure Firefox extensions? by Herring on Sunday May 31, 2009 @08:02AM (#634639)
The extension must precede that functionality. I remember stealing some code from it years ago & it was more complex.
Re:Ask HN: your favorite obscure Firefox extensions? by DarkShikari on Saturday May 30, 2009 @06:53PM (#634177)
Tree-style tabs:

https://addons.mozilla.org/en-US/firefox/addon/5890

An absolute must if you love having 50-100+ tabs open. Oddly enough, it works rather well with Tab Mix Plus as well.

Re:Ask HN: your favorite obscure Firefox extensions? by LogicHoleFlaw on Saturday May 30, 2009 @07:13PM (#634189)
Tree-style tabs + Colored Tabs extension is a joy to use. You'd think that Tree-styled tabs would not play nice with other tab extensions but the author makes large efforts to interoperate.
Re:Ask HN: your favorite obscure Firefox extensions? by Herring on Sunday May 31, 2009 @09:56AM (#634685)
Does it really work better than tab mix plus' multi row? I've used both & I'm not entirely convinced to switch.
Re:Ask HN: your favorite obscure Firefox extensions? by fergusjdawson on Saturday May 30, 2009 @09:43PM (#634305)
wow. 50-100 tabs? I find it useful with less than a dozen.
Re:Ask HN: your favorite obscure Firefox extensions? by boundlessdreamz on Saturday May 30, 2009 @06:30PM (#634160)
Favourite: PDF plugin for Mac OS X. This uses the mac's native pdf rendered and makes viewing pdf's a joy rather than a pain. http://code.google.com/p/firefox-mac-pdf/

Shameless plug: If you are a google docs user you might want to look gdocsbar [http://www.gdocsbar.com]. an update with some more features like download, is on the works and will be released shortly.

Re:Ask HN: your favorite obscure Firefox extensions? by bmac on Saturday May 30, 2009 @08:31PM (#634252)
Hide Menubar (alt to show menu bar) https://addons.mozilla.org/en-US/firefox/addon/4762

Hide Navigation Bar (F2 to toggle nav bar) https://addons.mozilla.org/en-US/firefox/addon/8769

Both are awesome for netbooks. I find hide menubar nice to have even when I do have the space to spare because I use the menu bar so rarely.

Re:Ask HN: your favorite obscure Firefox extensions? by Herring on Saturday May 30, 2009 @04:56PM (#634086)
Re:Ask HN: your favorite obscure Firefox extensions? by chaosmachine on Saturday May 30, 2009 @08:23PM (#634245)
Re:Ask HN: your favorite obscure Firefox extensions? by drinian on Saturday May 30, 2009 @11:52PM (#634412)
Rikaichan -- remarkably detailed Japanese - English dictionary (hover over words to show definitions) http://www.polarcloud.com/rikaichan/
Re:Ask HN: your favorite obscure Firefox extensions? by paddy_m on Saturday May 30, 2009 @07:17PM (#634192)
mozrepl This has so much potential. You can telnet into your firefox instance and run javascript commands, on documents and on the chrome. When I get some time I have ideas about integrating this with emacs (there already is mozreply.el , but it does little more than telnetting in).
Re:Ask HN: your favorite obscure Firefox extensions? by Beanblabber on Saturday May 30, 2009 @05:14PM (#634098)
Abduction: https://addons.mozilla.org/en-US/firefox/addon/3408

Let's you take a picture of a part of your page by rearranging a square. Helps so you don't have to go to paint or photoshop to crop your recent screenshot.

Re:Ask HN: your favorite obscure Firefox extensions? by vrandom on Saturday May 30, 2009 @06:28PM (#634159)
It's what i came here to recommend :)

May i also add ImgLikeOpera (https://addons.mozilla.org/en-US/firefox/addon/1672). Avoid downloading any pics on a page.

My 3gb per month mobile broadband limit here in the UK goes soooo much further with it.

Re:Ask HN: your favorite obscure Firefox extensions? by dave_au on Saturday May 30, 2009 @08:09PM (#634230)
Leechblock:

https://addons.mozilla.org/en-US/firefox/addon/4476

Lets me set fairly fine grained time limits on various sites that I'd otherwise spend too much time on.

Re:Ask HN: your favorite obscure Firefox extensions? by epe on Saturday May 30, 2009 @06:51PM (#634175)
If you do any web development that involves web metrics (Google Analyitics, Omniture, etc.), Omnibug is quite useful:

http://www.rosssimpson.com/dev/omnibug.html

Re:Ask HN: your favorite obscure Firefox extensions? by Raja_Selvaraj on Monday June 01, 2009 @12:52PM (#636333)
Surprised that Vimperator (https://addons.mozilla.org/en-US/firefox/addon/4891) has not been mentioned yet. Vim for the web !
Re:Ask HN: your favorite obscure Firefox extensions? by ujal on Saturday May 30, 2009 @05:11PM (#634095)
Re:Ask HN: your favorite obscure Firefox extensions? by Herring on Saturday May 30, 2009 @05:13PM (#634097)
I'm fairly sure tab mix plus does that.
Re:Ask HN: your favorite obscure Firefox extensions? by prakash on Saturday May 30, 2009 @04:53PM (#634082)
Re:Ask HN: your favorite obscure Firefox extensions? by weaksauce on Saturday May 30, 2009 @09:12PM (#634280)
Mouse Gestures Redox - Emulates Opera mouse gestures and now has rocker gestures for the mac.

http://www.mousegestures.org/

Speed Dial - Emulates the Opera speed dial home page. https://addons.mozilla.org/en-US/firefox/addon/4810

Re:Ask HN: your favorite obscure Firefox extensions? by Herring on Sunday May 31, 2009 @08:09AM (#634642)
I used Mouse Gestures Redox for a long while then I switched to firegestures. I can't remember why exactly, I think something to do with speed & a larger library of gestures.
Re:Ask HN: your favorite obscure Firefox extensions? by krishna2 on Sunday May 31, 2009 @01:14AM (#634455)
LORI - Life Of Request Info

Awesome plugin for quick/constant perf measurement. It shows how long it took the browser to get the first byte, the total time for page rendering, the total size of page and the total number of requests. For example, for this page, the stats are :

0.160s 0.600s 26.14KB 5 req

Re:Ask HN: your favorite obscure Firefox extensions? by zouhair on Sunday May 31, 2009 @04:16AM (#634540)
Open In Browser : https://addons.mozilla.org/en-US/firefox/addon/8207

Will give you the possibility to open a file (especially file that you are sure is text) in Firefox instead of downloading it.

Re:Ask HN: your favorite obscure Firefox extensions? by bagheera on Sunday May 31, 2009 @07:47AM (#634633)
Table tools - useful for sorting and filtering tables inline https://addons.mozilla.org/en-US/firefox/addon/2637
Re:Ask HN: your favorite obscure Firefox extensions? by travisjeffery on Saturday May 30, 2009 @08:20PM (#634242)
I use Safari more than Firefox these days. But when I use Firefox I quite like Vimperator, especially since I can write simple but functional extensions for it easily.
Re:Ask HN: your favorite obscure Firefox extensions? by smoofra on Monday June 01, 2009 @04:25PM (#636715)
I loved Hit-A-Hint so much I forked it when the original devoper abandoned it.

http://elder-gods.org/lol

Re:Ask HN: your favorite obscure Firefox extensions? by wlievens on Wednesday June 03, 2009 @11:18AM (#639865)
Long Titles used to be essential for reading xkcd, but I think the current Firefox build has it built-in.
Re:Ask HN: your favorite obscure Firefox extensions? by leed25d on Saturday May 30, 2009 @05:20PM (#634104)
clear fields, a small but very useful extension https://addons.mozilla.org/en-US/firefox/addon/2408