Extensions by Name


/r/CFB Easy Flair Requires Restart

Easily insert flair into /r/CFB posts with a shorthand system.

Not yet rated
12 users

1-click Online Document View Requires Restart

Open DOC, DOCX, PDF, PPT, PPTX and TIFF files linked in any webpage directly with Google Docs viewer using "1-click Online Document View", with a single left-click of your mouse / trackpad!!

Rated 4 out of 5 stars (5)
1,983 users

1-Click YouTube Video Download Requires Restart

The simplest YouTube Video Downloader for all YouTube Flash sites, period.

Rated 4 out of 5 stars (538)
653,477 users

3e Calendar Requires Restart

Adds support for 3e calendars

Rated 1 out of 5 stars (1)
446 users


IPv4/IPv6 Protocol Indicator and Configuration Manager

Rated 4 out of 5 stars (12)
3,424 users

abcTajpu Requires Restart

Type in accented letters, international characters or symbols into Firefox or Thunderbird, either simply by using a context menu (there being support for many languages), or quickly by keyboard macro (you can even define your own).

Rated 4 out of 5 stars (70)
3,194 users

About Add-ons Requires Restart

Adds an About button to extensions, themes, and languages in the Add-ons list.

Rated 4 out of 5 stars (9)
898 users

About Startup

Displays startup timings

Rated 4 out of 5 stars (15)
728 users

About:about Button

A button that lists all the about pages that exist. Some of these pages are also provided as separate buttons.

Rated 3 out of 5 stars (4)
305 users


Adds an about:addons-memory page that details add-on memory usage

Rated 4 out of 5 stars (125)
29,742 users

about:addons-memory 2016

Adds a new page that shows add-on memory usage

Rated 5 out of 5 stars (22)
8,728 users

about:config Button

Open about:config to change hidden settings that cannot be edited from the Options window. All Mozilla based programs have settings that can not be changed in the options window.

Rated 5 out of 5 stars (3)
2,972 users


A full featured color selector tool, to work with colors, and easily find the colors you want.

Not yet rated
170 users

ActiveInbox for Gmail Requires Restart

Use Gmail to get things done.

ActiveInbox turns Gmail into a GTD task manager, where your emails are your tasks.

It lets you achieve inbox zero, never forget an important email, and move projects forward with ease.

Rated 4 out of 5 stars (139)
842 users

Ad-Aware Ad Block

Ad-Aware Ad Block improves your browser’s speed and protects your privacy by blocking ads and trackers. It also improves online security by blocking malicious URLs and establishing the most secure connection available.

Rated 4 out of 5 stars (9)
81,506 users


Ad Blocker lets you block all ads, tracking & malware from the web world. It is an effective solution to browse the web without offensive and annoying ads you hate to see.

Rated 4 out of 5 stars (5)
13,523 users

Adblock Cyceam

Earn extra money while browsing online! Get rid of ads, and optionally tip your favorite sites.

Not yet rated
57 users

Adblock Edge

Adblock Edge is a fork of the Adblock Plus version 2.1.2 extension for blocking advertisements on the web, without sponsored ads whitelist.

**This addon has been discontinued**

Rated 5 out of 5 stars (305)
378,031 users

Adblock Plus Featured

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).

Rated 5 out of 5 stars (4,887)
20,031,442 users

Add Search Engines for SeaMonkey Requires Restart

Add missing search-engine detection to SeaMonkey

Rated 4 out of 5 stars (2)
28 users