My Favorite Add-ons

by Hellebaard

25 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,868 reviews

21,120,705 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 95 reviews

21,156 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!

DuckDuckGo (HTTPS / SSL) by DuckDuckGo

Rated 5 out of 5 stars 65 reviews

7,299 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!

Enigmail by Patrick Brunschwig

Rated 4 out of 5 stars 179 reviews

153,192 users

OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.

ChatZilla by Gijs Kruitbosch, Robert Ginda, others

Rated 4 out of 5 stars 125 reviews

159,643 users

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

TinEye Reverse Image Search by TinEye

Rated 4 out of 5 stars 174 reviews

125,168 users

TinEye is a reverse image search engine. The plugin adds a context menu item that allows you to 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.

Quick Locale Switcher by ppclick

Rated 3 out of 5 stars 81 reviews

226,100 users

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

Woordenboek Nederlands by fjoerfoks

Rated 3 out of 5 stars 55 reviews

87,544 users

Dutch dictionary with wordslist from OpenTaal.

Form History Control by Stephan Mahieu

Rated 5 out of 5 stars 76 reviews

28,879 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.

Multi Links by Grizzly Ape

Download Now

Experimental

Rated 4 out of 5 stars 177 reviews

29,251 users

Multi Links lets you open, copy or bookmark multiple links at the same time rather than having to do them all individually.

Contacts Sidebar by Jeroen Peters

Rated 4 out of 5 stars 271 reviews

36,326 users

Displays the address books in a sidebar in Thunderbirds 3-pane-window and can be toggled with the F4 key or a toolbar button.

Visit my Contacts Sidebar site for recent versions and news.

LanguageToolFx – Style and Grammar Checker by Gulp21

Rated 4 out of 5 stars 6 reviews

11,753 users

Check selected text on websites or text in text fields with the free style and grammar checker LanguageTool.

Duck Duck Go (SSL) by SSL Search Bar

Rated 5 out of 5 stars 6 reviews

434 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 90 reviews

23,205 users

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