Дополнения

FlashGot Mass Downloader от Giorgio Maone

Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.

User Agent Switcher от chrispederick

The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.

Element Hiding Helper для Adblock Plus от Felix Dahlke

Избавься от текстовой рекламы! Element Hiding Helper расширяет возможности Adblock Plus, упрощая создание правил для скрытия элементов.

Live HTTP Headers от Daniel Savard, Nikolas Co

View HTTP headers of a page and while browsing.

HttpFox от Martin Theimer

An HTTP analyzer addon for Firefox

Mozilla Archive Format, with MHT and Faithful Save от Christopher Ottley, Paolo Amadini

— Open web pages saved with Internet Explorer or other browsers (MHT)
— Save many tabs, video and audio reliably, in a single ZIP file (MAFF)
— Return to the original site you saved a page from, and more!

Telify от michael-koch4096589

Converts telephone numbers into clickable links for use with CTI applications, SIP clients, Skype, Netmeeting, snom phones, the AGFEO TK-Suite Client and SerVonic IXI-PCS.

Примечание подборщика I prefer this over the default Skype addon as it allows me to configure phone numbers to work with my SIP account too.

AutoPager от Wind Li

AutoPager automatically loads next pages when you reach the end of a page. It works on a ton of sites,Google,Yahoo..
It works well with most other add-ons adblock plus, WOT and most of the greasemonkey scripts.
You can also try AutoPagerLite.

DOM Inspector от Scott MacGregor

Inspect the DOM of HTML, XUL, and XML pages, including the mail...

MR Tech Toolkit от mrtech

(Formerly Local Install) The primary goal of this extension is to provide the tools needed to install and manage extensions and themes locally and tons of other features.

Note: With Toolkit 6.0 Auto Archiving is fully working in Firefox 2.0 and temp...

Console² от Philip Chee, zeniko

Console² (pronounced Console Squared or Console Two) replaces the JavaScript Console with what could be the next generation Error Console. From v0.5 includes the Console Filter extension previously available separately from the Console² website.