by axemclion

22 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,793 reviews

2,285,369 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

1,273,056 users

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

Tab Mix Plus by onemen, Gary Reyes

Rated 4 out of 5 stars 2,544 reviews

922,576 users

Tab Mix Plus enhances Firefox's tab browsing capabilities. It includes such features as duplicating tabs, controlling tab focus, tab clicking options, undo closed tabs and windows, plus much more. It also includes a full-featured session manager.

Web Developer by chrispederick

Rated 5 out of 5 stars 217 reviews

567,444 users

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

Flashblock by Philip Chee

Rated 4 out of 5 stars 1,168 reviews

738,158 users

Never be annoyed by a Flash animation again! Blocks Flash so it won't get in your way, but if you want to see it, just click on...

Speed Dial by Josep del Rio

Rated 4 out of 5 stars 1,247 reviews

426,701 users

Direct access to your most visited websites

SQLite Manager by lazierthanthou

Rated 5 out of 5 stars 39 reviews

201,955 users

Manage any SQLite database on your computer.

Tamper Data by Adam Judson

Rated 4 out of 5 stars 132 reviews

115,714 users

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

FireGestures by Gomita

Rated 4 out of 5 stars 877 reviews

386,376 users

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

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 339 reviews

157,217 users

Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.

HackBar by Johan Adriaans, Pedro Laguna

Rated 4 out of 5 stars 41 reviews

31,118 users

Simple security audit / Penetration test tool.

ShowIP by ShowIP Dev Team

Download Now


Rated 3 out of 5 stars 283 reviews

67,741 users

Show the IP address of the current page in the status bar. It also allows querying custom information services by IP (right click) and see location and avaiable vouchers for shopping sites. Additionally you can copy the IP address to the clipboard.

CSS Usage by Teun van Eijsden

Rated 4 out of 5 stars 38 reviews

22,071 users

Firebug extension to view which CSS rules are actually used.

Cache Status by Jason Purdy, Andy Portmen

Rated 4 out of 5 stars 110 reviews

20,748 users

Easy cache status & management from status...

Pixel Perfect by Mike Buckley, Lorne Markham, others

Rated 4 out of 5 stars 101 reviews

14,280 users

Pixel Perfect is a Firefox extension that allows web developers and designers to easily overlay a web composition with semi-transparent layers (images). These layers can be consequently used for per pixel comparison between the page and a layer.
  1. 1
  2. 2
Results 115 of 22

What are Collections?

Collections are groups of related add-ons that anyone can create and share.

Explore Collections

More by this User

See all collections by this user

Recently Viewed