FeR collection

by fergomez

19 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,842 reviews

2,024,418 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 1,012 reviews

1,219,601 users

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

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 4 out of 5 stars 1,804 reviews

1,226,725 users

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

Stylish by userstyles.org

Rated 4 out of 5 stars 836 reviews

449,292 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.

Tab Mix Plus by onemen, Gary Reyes

Rated 4 out of 5 stars 2,621 reviews

789,557 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.

Web Developer by chrispederick

Rated 5 out of 5 stars 249 reviews

448,514 users

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

Tamper Data by Adam Judson

Rated 4 out of 5 stars 142 reviews

101,062 users

Use tamperdata to view and modify HTTP/HTTPS headers and post parameters...

Flashblock by Philip Chee

Rated 4 out of 5 stars 1,219 reviews

520,594 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 2,580 reviews

302,755 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!

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 312 reviews

248,679 users

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

Screengrab (fix version) by Oleksandr

Rated 5 out of 5 stars 307 reviews

129,746 users

Screengrab! saves webpages as images.
0.99 released!
New features: upload to internet

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 358 reviews

131,173 users

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

SoundCloud Downloader - SoundGrab by Technowise

Rated 4 out of 5 stars 137 reviews

71,233 users

Adds download link/button to all SoundCloud tracks and sets.

Google Search by Image by Mystery

Rated 4 out of 5 stars 34 reviews

31,096 users

Adds Google Search by Image context menu item for images.

Download Statusbar by C.J.

Download Now


Rated 4 out of 5 stars 1,460 reviews

280,484 users

View and manage downloads from a tidy statusbar - without the download window getting in the way of your web browsing.

Thanks Tekzilla for your awesome review! Click here to see their video: http://youtu.be/BUDqWrJ-Vao
  1. 1
  2. 2
Results 115 of 19

What are Collections?

Collections are groups of related add-ons that anyone can create and share.

Explore Collections