PowerPack

by Fur Q

17 Add-ons in this Collection

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 336 reviews

162 users

The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.

SQLite Manager by lazierthanthou

Rated 4 out of 5 stars 354 reviews

84 users

Manage any SQLite database on your computer.

Session Manager by Michael Kraft

Rated 5 out of 5 stars 850 reviews

143 users

Session Manager saves and restores the state of all or some windows - either when you want it or automatically at startup and after crashes. It can also automatically save the state of open windows individually.

HttpFox by Martin Theimer

Rated 4 out of 5 stars 217 reviews

18 users

An HTTP analyzer addon for Firefox

Notepad (QuickFox) by InBasic, J Benthum

Rated 4 out of 5 stars 191 reviews

12 users

Everyday note-taking solution.

Image Zoom by Jason Adams

Rated 4 out of 5 stars 355 reviews

161 users

Adds zoom and rotation functionality for images...

DOM Inspector by SeaMonkey Council

Rated 5 out of 5 stars 78 reviews

13,355 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.

Custom Buttons by Yan, cubegm, others

Rated 4 out of 5 stars 125 reviews

21 users

Gives a possibility to create custom toolbarbuttons...

Link Properties Plus by Infocatcher

Rated 5 out of 5 stars 17 reviews

14 users

Provides extended link properties: size of linked file, last modified time, etc.

Tab Counter by Michael Kraft

Rated 4 out of 5 stars 115 reviews

3 users

A simple extension that counts the number of open tabs per window and displays the count in the toolbar...

InspectorWidget by Sailfish

Rated 5 out of 5 stars 10 reviews

5 users

Adds toolbar button and context menus for invoking the DOM Inspector (DOMi) for either chrome or content elements.

XUL/Migemo by Piro (piro_or)

Rated 4 out of 5 stars 49 reviews

0 users

This provides dictionary-assisted search (Migemo search) and regular expression powered search for "find in this page" and other features.

DOM Inspector by Scott MacGregor

Rated 3 out of 5 stars 6 reviews

0 users

Inspect the DOM of HTML, XUL, and XML pages, including the mail...

InfoLister by Nickolay Ponomarev

Rated 4 out of 5 stars 35 reviews

1 user

Lists installed add-ons (extensions, themes, plugins). Mozilla does not allow me to publish the version compatible with Firefox 48+, see http://forums.mozillazine.org/viewtopic.php?f=48&t=2084957&p=14715558#p14715558 for details.

FastPrevNext by Nils Maier

Rated 4 out of 5 stars 12 reviews

0 users

Easily browse through sequenced URLs
  1. 1
  2. 2
Results 115 of 17

What are Collections?

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

Explore Collections