Web-Development

by David Fichtmueller

15 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,835 reviews

2,082,217 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 1,007 reviews

1,227,050 users

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

Stylish by Jason Barnabe

Rated 4 out of 5 stars 829 reviews

455,819 users

Restyle the web with Stylish, a user styles manager. Stylish lets you easily install themes and skins for Google, Facebook, YouTube, Tumblr, and many, many other sites. You can even customize Firefox and other programs themselves.

Web Developer by chrispederick

Rated 5 out of 5 stars 246 reviews

461,454 users

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

FireFTP by Mime Čuvalo

Rated 4 out of 5 stars 971 reviews

458,983 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!

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 309 reviews

256,033 users

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

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 358 reviews

135,415 users

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

Image Zoom by Jason Adams

Rated 4 out of 5 stars 343 reviews

141,463 users

Adds zoom and rotation functionality for images...

Quick Locale Switcher by ppclick

Rated 3 out of 5 stars 88 reviews

175,561 users

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

DOM Inspector by SeaMonkey Council

Rated 5 out of 5 stars 70 reviews

120,434 users

DOM Inspector is a tool that can be used to inspect and edit the live DOM of any web document or XUL application. The DOM can be navigated using a two-paned window displaying a variety of different views on the document and all nodes within.

Locale Switcher by bsmedberg

Rated 4 out of 5 stars 26 reviews

50,503 users

Displays a menu item for switching the application locale.

Screengrab by Andy M

Rated 4 out of 5 stars 587 reviews

18,827 users

Screengrab! saves webpages as images... but not for new versions of Firefox.

FF changes too fast and I don't have the time to maintain it anymore. Bugs have developed that I am not in a position to investigate.

Therefore, Screengrab is EOL.

Header Spy by IronNem

Rated 4 out of 5 stars 18 reviews

5,381 users

Shows HTTP headers on statusbar.

Console² by Philip Chee, zeniko

Rated 5 out of 5 stars 49 reviews

7,193 users

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.

UrlParams by Erik Schmidt

Rated 4 out of 5 stars 38 reviews

627 users

Shows you the GET and POST parameters of the current website in the sidebar...

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