development

by Stephan Kleiber

58 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,947 reviews

19,408,779 users

Blocks annoying video ads on YouTube, Facebook ads, banners and much more.

Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 4 out of 5 stars 1,935 reviews

1,910,776 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...

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 4 out of 5 stars 1,832 reviews

1,207,084 users

The first and only download manager/accelerator built inside Firefox!

Stylish by userstyles.org

Rated 4 out of 5 stars 882 reviews

434,161 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.

FoxyProxy Standard by Eric H. Jung, groeg, others

Rated 4 out of 5 stars 366 reviews

263,134 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.

Tab Mix Plus by onemen, Gary Reyes

Rated 4 out of 5 stars 2,636 reviews

779,264 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.

Full Web Page Screenshots (♥♥♥♥♥) by susbox

FireShot makes full web page screenshots. Demo: http://bit.ly/RlBQMV

Screenshots can be quickly captured and:

― Saved as Image or PDF
― Sent to clipboard
― Printed
― Annotated *
― Uploaded *
― E-Mailed *

* OS Windows only

Web Developer by chrispederick

Rated 5 out of 5 stars 254 reviews

433,933 users

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

Password Exporter by Justin Scott (fligtar), Jorge Villalobos

Rated 4 out of 5 stars 371 reviews

211,193 users

This extension allows you to export your saved passwords and disabled login hosts using XML or CSV files that can be imported later.

Flashblock by Philip Chee

Rated 4 out of 5 stars 1,227 reviews

507,039 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...

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,592 reviews

291,327 users

Xmarks is the #1 bookmarking and open tab add-on. Keep your bookmarks, and open tabs backed up and synchronized across computers and browsers. Mobile phones with Premium access. Utilize LastPass to sync passwords!

IE Tab by PCMan, yuoo2k

Rated 4 out of 5 stars 1,205 reviews

174,733 users

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

ColorfulTabs by Shivanand Sharma

Rated 4 out of 5 stars 1,026 reviews

221,453 users

The first addon you should be installing on a fresh Firefox install. A must have. The most beautiful yet the simplest add-on that makes a strong colorful appeal. Colors every tab in a different color.

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 360 reviews

126,562 users

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

Font Finder by Ben Dodson, Eric Caron, others

Rated 4 out of 5 stars 77 reviews

34,781 users

FontFinder is created for designers, developers and typographers. It allows a user to analyze the font information of any element on a page, copy any piece(s) of that information to the clipboard, and perform inline replacements to test new layouts.
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