My Favorite Add-ons

by Hellebaard

23 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,958 reviews

18,888,836 users

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).

Lightning by Mozilla Calendar Project

Organize your schedule and life's important events in a calendar that's fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.

YouTube by ditman

Rated 5 out of 5 stars 104 reviews

18,019 weekly downloads

This add-on will add an improved version of YouTube's search engine, now with search suggestions!

Thanks all who voted for helping this add-on to become public! Please keep leaving feedback!

Enigmail by Patrick Brunschwig

Rated 4 out of 5 stars 198 reviews

166,903 users

OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.

DuckDuckGo (HTTPS / SSL) by DuckDuckGo

Rated 5 out of 5 stars 73 reviews

5,940 weekly downloads

DuckDuckGo is the search engine that doesn't track you. We also have smarter answers and less clutter. This extension adds DuckDuckGo (HTTPS / SSL version) to the search bar. For more features, see the DuckDuckGo Plus add-on. Enjoy!

Woordenboek Nederlands by fjoerfoks

Rated 3 out of 5 stars 60 reviews

82,800 users

Dutch dictionary with wordslist from OpenTaal.

TinEye Reverse Image Search by TinEye

TinEye is a reverse image search engine. The extension adds a context menu item so you can search for an image to find out where it came from, how it is being used, if modified versions of the image exist, or to find higher resolution versions.

ChatZilla by Gijs Kruitbosch, Robert Ginda, others

Rated 4 out of 5 stars 126 reviews

113,727 users

A clean, easy to use and highly extensible Internet Relay Chat (IRC) client.

Quick Locale Switcher by ppclick

Rated 3 out of 5 stars 88 reviews

201,914 users

Allows you to quickly switch to a different language (User Interface, Spell Checker Dictionary and Website content) in your Mozilla application.

Form History Control by Stephan Mahieu

Rated 5 out of 5 stars 90 reviews

24,392 users

Manage form history entries (search, edit, cleanup, export/import) and easy text formfiller.

Auto-save text entered in any form while typing to allow fast recovery when disaster strikes.

Control for which webpage form history is saved or not.

Duck Duck Go (SSL) by SSL Search Bar

Rated 5 out of 5 stars 7 reviews

381 weekly downloads

Duck Duck Go is a search engine that does not collect or share personally identifiable information. This search bar add-on utilizes SSL to protect searches between You and Duck Duck Go.

Duplicate Contact Manager by Marian Steinbach, Copelnug

Rated 3 out of 5 stars 105 reviews

23,189 users

Facilitates handling of duplicates in your address book(s). Allow to search and remove similar contacts.

LightningButton by rsjtdrjgfuzkfg

Rated 5 out of 5 stars 14 reviews

18,969 users

Toolbar-Buttons for Lightning; advances the feature to get rid of the tabbar.

ThunderBirthDay by ingomueller.net

Rated 4 out of 5 stars 85 reviews

19,272 users

Display birthdays from the Thunderbird addressbooks as events in Lightning.

Xpunge by Theodore Tegos

Rated 4 out of 5 stars 35 reviews

14,593 users

Empties the Trash and Junk folders, and compacts folders in multiple Thunderbird accounts.
  1. 1
  2. 2
Results 115 of 23

What are Collections?

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

Explore Collections