development

by Stephan Kleiber

59 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,303 reviews

18,955,577 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 1,650 reviews

2,865,909 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 1,403 reviews

1,587,661 users

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

Stylish by Jason Barnabe

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.

Flashblock by Philip Chee

Rated 4 out of 5 stars 885 reviews

967,965 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 183 reviews

746,665 users

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

FoxyProxy Standard by Eric H. Jung

Rated 4 out of 5 stars 295 reviews

379,070 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 2,178 reviews

1,119,923 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.

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,344 reviews

438,114 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!

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

Rated 5 out of 5 stars 378 reviews

292,760 users

FireShot Webpage Screenshots captures webpage screenshot entirely (see demo: http://bit.ly/RlBQMV)

The screenshot can be quickly annotated and:

+ Uploaded
+ Saved as PDF/PNG/GIF/JPEG/BMP
+ Sent to clipboard
+ Printed
+ E-Mailed
+ Exported

IE Tab by PCMan, yuoo2k

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 640 reviews

214,400 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 863 reviews

287,260 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...

Password Exporter by Justin Scott (fligtar)

Rated 4 out of 5 stars 274 reviews

188,826 users

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

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 305 reviews

174,534 users

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