development

by Stephan Kleiber

58 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,928 reviews

20,652,753 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 5 out of 5 stars 1,783 reviews

2,427,357 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 5 out of 5 stars 1,598 reviews

1,374,052 users

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

Stylish by Jason Barnabe

Rated 4 out of 5 stars 746 reviews

681,256 users

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

Tab Mix Plus by onemen, Gary Reyes

Rated 4 out of 5 stars 2,525 reviews

927,825 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.

Flashblock by Philip Chee

Rated 4 out of 5 stars 1,161 reviews

740,586 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...

Web Developer by chrispederick

Rated 5 out of 5 stars 216 reviews

576,477 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 342 reviews

303,590 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.

Webpage Screenshot in Firefox (♥♥♥♥♥) by susbox

Rated 5 out of 5 stars 432 reviews

273,555 users

FireShot Webpage Screenshots captures pages entirely. 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

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,514 reviews

313,688 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!

Password Exporter by Justin Scott (fligtar), Jorge Villalobos

Rated 4 out of 5 stars 319 reviews

185,048 users

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

IE Tab by PCMan, yuoo2k

Rated 4 out of 5 stars 1,190 reviews

262,206 users

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

PDF Download by Nitro PDF Software

Rated 2 out of 5 stars 682 reviews

126,425 users

Use PDF Download to do whatever you like with PDF files on the Web. Regain control and eliminate browser problems, view PDFs directly in Firefox as HTML, and use the all-new Web-to-PDF toolbar to save and share Web pages as high-quality PDF files.

ColorfulTabs by Shivanand Sharma

Rated 4 out of 5 stars 985 reviews

227,076 users

The most beautiful yet the simplest add-on that makes a strong colorful appeal. Colors every tab in a different color and makes them easy to distinguish while beautifying the overall appearance of the interface. For Seamonkey & Flock. An essential. F...

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 333 reviews

156,098 users

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