by skull satan

21 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,799 reviews

2,704,207 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 964 reviews

1,363,522 users

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

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 251 reviews

403,723 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 218 reviews

638,054 users

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

FireFTP by Mime Čuvalo

Rated 4 out of 5 stars 935 reviews

634,532 users

FireFTP is a free, secure, cross-platform FTP/SFTP client for Mozilla Firefox which provides easy and intuitive access to FTP/SFTP servers.

Check out my new project, FireSSH!

Flagfox by Dave G

Rated 5 out of 5 stars 636 reviews

655,173 users

Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 306 reviews

339,959 users

Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...

IE Tab by PCMan, yuoo2k

Rated 4 out of 5 stars 1,194 reviews

285,511 users

IE Tab - an extension from Taiwan, features: Embedding Internet Explorer in tabs of Mozilla/Firefox...

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 341 reviews

179,116 users

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

FirePHP by cadorn

Rated 4 out of 5 stars 47 reviews

58,568 users

FirePHP enables you to log to your Firebug Console using a simple PHP method call.

Not using Firebug 1.9+ on Firefox 8+? See http://firephp.org/

ShowIP by ShowIP Dev Team

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Rated 3 out of 5 stars 285 reviews

71,761 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.

Pixel Perfect by Mike Buckley, Lorne Markham, others

Rated 4 out of 5 stars 101 reviews

16,449 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.

LinkChecker by Kevin Freitas

Rated 4 out of 5 stars 77 reviews

19,617 users

Check the validity of links on any webpage.

FireQuery by BinaryAge, Jan Odvarko

Rated 4 out of 5 stars 52 reviews

34,368 users

Firebug plugin for jQuery development

Sothink Web Video Downloader for Firefox by SothinkMedia.com

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Rated 2 out of 5 stars 208 reviews

8,293 users

A simple, clean and easy-to-use FREE Firefox extension for video download and Flash download. Supports Windows/Mac/Linux operating systems and the latest Mozilla Firefox. Now Supports Mozilla Firefox 4 and English, Spanish, Chinese language.
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