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.vcs Support

Import and export calendar files in vCalendar (.vcs) format

Rated 3 out of 5 stars (17)
9,679 users

3e Calendar

Adds support for 3e calendars

Rated 1 out of 5 stars (1)
602 users

A Better S/MIME GUI

Provides a better S/MIME GUI for Thunderbird.

Rated 3 out of 5 stars (2)
9 users

abcTajpu

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 (69)
4,046 users

About Add-ons

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

Rated 5 out of 5 stars (8)
928 users

About Startup No Restart

Displays startup timings

Rated 4 out of 5 stars (15)
1,058 users

about:kittens

Baby cats and kittens in the about box...

Rated 5 out of 5 stars (6)
52 users

about:support

A Mozilla Messaging addon to assist in product support.

Rated 4 out of 5 stars (5)
39 users

about:telemetry No Restart

Display telemetry data in about:telemetry. See http://mzl.la/WI0hZz for descriptions. See http://arewesnappyyet.com for aggregated data.

*** NOTE ***: Firefox 19+ has a built-in about:telemetry page

Rated 4 out of 5 stars (9)
274 users

AboutConfig

about:config for...

Rated 3 out of 5 stars (13)
1,237 users

abusix Spam reporter

The abusix Spam Reporter enables you to forward and report spam to the abusix blackhole.mx systems directly from Thunderbird (free of charge). Thus, you help professionals and security vendors to fight spam much more effectively at the source.

Rated 4 out of 5 stars (7)
579 users

Account Colors

Associates user-defined colors with accounts and identities. Applies these colors to accounts, identities, folders, message list, message headers and compose headers. Users will always know which accounts/identities they are working with.

Rated 4 out of 5 stars (88)
10,241 users

Account Manager Toolbar Button

This is a small devision of Toolbar Buttons https://addons.mozilla.org/firefox/2377/ or
http://codefisher.org/toolbar_button/

Not yet rated
28 users

accountex

Export/Import Account Settings.....

Rated 2 out of 5 stars (28)
7,444 users

Adblock Edge No Restart

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

Rated 5 out of 5 stars (265)
814,751 users

Adblock Plus No Restart 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 (4,818)
21,867,141 users

Add Birthdays To Calendar

Birthdays from addressbook-contacts will be added as events to Lightning...

Rated 3 out of 5 stars (22)
187 users

Add Signature

Simply add your signature manually (right mouse click) to your emails

Rated 3 out of 5 stars (33)
8,337 users

Add-on Update Checker

Adds Tools menu item to check Add-ons for updates. Includes toolbar icon.

Rated 4 out of 5 stars (48)
16,041 users

Add-ons Button

Opens the Add-ons window to perform tasks on your installed Extensions, Themes, Plug-ins and Language packs.

Not yet rated
682 users