My Favorite Add-ons

by tyll

23 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,793 reviews

2,211,735 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...

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 251 reviews

366,626 users

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

Web Developer by chrispederick

Rated 5 out of 5 stars 217 reviews

557,677 users

The Web Developer extension adds various web developer tools to the browser.

FoxyProxy Standard by Eric H. Jung, groeg, others

Rated 4 out of 5 stars 343 reviews

291,115 users

FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.

Tamper Data by Adam Judson

Rated 4 out of 5 stars 132 reviews

113,718 users

Use tamperdata to view and modify HTTP/HTTPS headers and post parameters...

FireGestures by Gomita

Rated 4 out of 5 stars 877 reviews

380,781 users

A customizable mouse gestures extension which enables to execute various commands and user scripts with six types of gestures.

Personas Plus by Mozilla

Rated 3 out of 5 stars 955 reviews

372,628 users

Personas are free, easy-to-install "skins" for Firefox. Personas Plus extends that built-in functionality to give you even more control and easier access to new, popular, and your own favorite Personas.

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 157 reviews

169,414 users

View HTTP headers of a page and while browsing.

HttpFox by Martin Theimer

Rated 4 out of 5 stars 163 reviews

91,960 users

An HTTP analyzer addon for Firefox

Autofill Forms by Sebastian Tschan, Egor Zindy, others

Rated 3 out of 5 stars 395 reviews

65,724 users

Autofill Forms enables you to fill out web forms with one click.

HackBar by Johan Adriaans, Pedro Laguna

Rated 4 out of 5 stars 41 reviews

30,219 users

Simple security audit / Penetration test tool.

Quick Locale Switcher by ppclick

Rated 4 out of 5 stars 94 reviews

162,778 users

Allows you to quickly switch to a different language (User Interface, Spell Checker Dictionary and Website content) in your Mozilla application.

Littlefox for Firefox by alfredkayser

Rated 4 out of 5 stars 135 reviews

13,726 users

HOTFIX: is uploaded, awaiting review.
LittleFox, designed for optimal screen usage, leaving lots of room for browsing. Includes support for many extensions.

Install the About Home Themer extension to also theme the about:home page.

NoRedirect by Kai Liu

Rated 4 out of 5 stars 49 reviews

12,517 users

NoRedirect lets the user take control of HTTP redirects. It can be used to interdict an ISP's DNS search redirection hijacks, preview/screen "shortened" URLs (e.g., TinyURL), stop the annoying redirection of "smart" error pages, etc.

SOA Client by Michael S.

Rated 4 out of 5 stars 14 reviews

12,829 users

A portable client to access web services and UDDI registries.
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