Favs

by g30rg3_x

16 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,770 reviews

2,381,661 users

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...

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 959 reviews

1,280,355 users

Customize the way a web page displays or behaves, by using small bits of JavaScript.

NoScript Security Suite by Giorgio Maone

Rated 5 out of 5 stars 1,483 reviews

2,140,547 users

The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.

FlashGot Mass Downloader by Giorgio Maone

Rated 5 out of 5 stars 486 reviews

969,995 users

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 by chrispederick

Rated 4 out of 5 stars 245 reviews

384,944 users

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

Classic Theme Restorer (Customize UI) by Aris

Rated 5 out of 5 stars 923 reviews

438,040 users

Squared tabs, appmenu, add-on bar, small button view and many more 'old' features for Firefox 29+ (Windows / MacOSX / Linux).

All builds & changelogs on versions page!

SQLite Manager by lazierthanthou

Rated 5 out of 5 stars 34 reviews

200,936 users

Manage any SQLite database on your computer.

United States English Spellchecker by jooliaan

Rated 3 out of 5 stars 164 reviews

492,613 users

United States English Spellchecker for Firefox, Thunderbird and SeaMonkey by Kevin Atkinson and Geoff Kuenning.

To enable, right-click in a multi-line text box, select "Languages", then "English (United States)".

Cookies Manager+ by V@no

Rated 4 out of 5 stars 72 reviews

115,420 users

Cookies manager to view, edit and create new cookies. It also shows extra information about cookies, allows edit multiple cookies at once and backup/restore them.

Spanish (Spain) Dictionary by tnarik, RickieES

Rated 4 out of 5 stars 107 reviews

256,852 users

Spanish/Spain Dictionary

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 155 reviews

177,215 users

View HTTP headers of a page and while browsing.

JavaScript Deobfuscator by Wladimir Palant

Rated 4 out of 5 stars 21 reviews

54,681 users

This add-on shows you what JavaScript code runs on a web page, even if it is obfuscated and generated on the fly. Simply open JavaScript Deobfuscator from the Web Developer menu and watch the scripts being compiled/executed.

FEBE by Chuck_Baker

Rated 4 out of 5 stars 634 reviews

130,914 users

FEBE (Firefox Environment Backup Extension) allows you to quickly and easily backup your Firefox extensions. In fact, it goes beyond just backing up -- It will actually rebuild your extensions individually into installable .xpi files.

Diccionario español México by eduardo_moreno

Rated 4 out of 5 stars 75 reviews

67,698 users

Diccionario para México.

Gmail Manager by Todd Long

Download Now

Experimental

Rated 4 out of 5 stars 1,341 reviews

127,715 users

The original Gmail notifier for multiple accounts. Allows you to receive new mail notifications along with viewing account details including unread messages, saved drafts, spam messages, labels with new mail, space used, and new mail snippets.
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