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Extension Auto-Installer

Extension Auto-Installer is a helper for Firefox/SeaMonkey/Thunderbird extension developers: it allows automatically adding or updating browser extensions, e.g. via command line tools. This makes testing your changes easier.

Rated 5 out of 5 stars (38)
2,795 users

about:addons-memory 2016

Adds a new page that shows add-on memory usage

Rated 5 out of 5 stars (32)
14,204 users

Copy Profile

Copy your profile to the sdcard for easy debugging.

Rated 5 out of 5 stars (10)
321 users

Big Navigation

enlarging the navigation links on the pages

Rated 5 out of 5 stars (8)
481 users

Voz Love Compatible with Firefox 57+

Add-ons for vozforums.com

Rated 5 out of 5 stars (5)
20 users

OctoLinker Compatible with Firefox 57+

The OctoLinker extension is pretty handy for reading code on GitHub. It makes e.g. require and import statements clickable.

Rated 5 out of 5 stars (5)
335 users

Quora Login Bypass Compatible with Firefox 57+

Lets you Bypass Quora Login.
A Quora Blog shared this trick/hack so that knowledge can be shared without restriction. If you are logged in, it won't do anything.
But say you are not logged in (or using private window), then this comes handy.

Rated 5 out of 5 stars (5)
111 users

JSONovich

Pretty-prints JSON content in the browser for easy, unobtrusive viewing.

Rated 4 out of 5 stars (42)
7,216 users

youtube convert2mp3.net Compatible with Firefox 57+

Easily download and convert videos with convert2mp3.net from youtube, dailymotion, and clipfish.

If you have any feedback please use the comment section below.

Rated 5 out of 5 stars (6)
662 users

Youtube's Annotations No More

Disable Youtube's annotations.

Rated 5 out of 5 stars (6)
2,692 users

Amazing TTV Compatible with Firefox 57+

Rated 5 out of 5 stars (6)
422 users

Search and Wider Mail by Yahoo

Expand your Yahoo Mail inbox. Set Yahoo as your default search and enjoy a wider view.

Wider mail experience works only with Yahoo as the default search engine.

Rated 4 out of 5 stars (23)
25,665 users

Skip adf.ly skip!!

This addon allows you to skip automatically advertising adf.ly.
Basically when the page loads the site adf.ly with various advertisements, the add-on does go directly to the site you want, but waiting a few seconds.
It is compatible with Android.

Rated 4 out of 5 stars (27)
6,687 users

Console

Adds an error console in the browser

Rated 5 out of 5 stars (7)
1,091 users

Open Native App

Open Play Store, Youtube and other links in their Android native apps!

Rated 4 out of 5 stars (16)
1,508 users

Toggle Pin Tab (WebExtension) Compatible with Firefox 57+

Press Alt+P to toggle the pin stat of the current tab

Rated 5 out of 5 stars (4)
59 users

Procrastination Guard Site Blocker Compatible with Firefox 57+

Blocks specified websites, or only allows access to specified websites, in order to avoid procrastination.

Rated 5 out of 5 stars (5)
302 users

Click-to-Play Manager

Manages the Click-to-Play domain whitelist.

Rated 4 out of 5 stars (14)
2,387 users

AdStopEnforcer Compatible with Firefox 57+

Prevent boring messages like "disable your ad-blocker and refresh page to continue"

Rated 4 out of 5 stars (14)
2,846 users

Search & Destroy for Amazon, Etsy and Ebay! Compatible with Firefox 57+

Extension to remember items you've already while searching + keyboard navigation (through items lists and pages)!

Rated 5 out of 5 stars (6)
47 users