My Favorite Add-ons

by nazir

17 Add-ons in this Collection

Enigmail by Patrick Brunschwig

Rated 4 out of 5 stars 260 reviews

4,019 users

Helper tool to migrate your keys and important settings from Enigmail to Thunderbird 78.

Remove Duplicate Messages by Eyal Rozenberg

Rated 4 out of 5 stars 300 reviews

92,776 users

Search and remove messages which are the same as other messages in your mail folders (referred to as duplicates or dupes).

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 216 reviews

38 users

View HTTP headers of a page and while browsing.

JavaScript Debugger by James Ross, Robert Ginda, others

Rated 4 out of 5 stars 52 reviews

905 users

As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.

Venkman is the code name for Mozilla's JavaScript Debugger. Venkman aimed to provide a powerful JavaScript debugging environment for Mozilla based browsers.

Český slovník pro kontrolu pravopisu by Mozilla.cz

Rated 4 out of 5 stars 36 reviews

14,132 users

Slovník pro kontrolu pravopisu pro aplikace Mozilla

ChatZilla by Gijs Kruitbosch, Robert Ginda, others

Rated 4 out of 5 stars 151 reviews

12,889 users

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

DOM Inspector by SeaMonkey Council

Rated 5 out of 5 stars 78 reviews

13,250 users

DOM Inspector is a tool that can be used to inspect and edit the live DOM of any web document or XUL application. The DOM can be navigated using a two-paned window displaying a variety of different views on the document and all nodes within.

Quote Colors by Malte Ruecker

Rated 5 out of 5 stars 52 reviews

117 users

Quote Colors allows you to select text and background colors of different quote levels which are applied when reading or printing mail/news messages. Additionally, you can choose between graphical and traditional plain text quoting display mode.

Scriptish by Erik Vold, Nils Maier, others

Rated 4 out of 5 stars 109 reviews

11 users

The greatest user script engine on the Internet (a fork of Greasemonkey).

Launchy by gemal

Rated 3 out of 5 stars 87 reviews

14 users

Launchy will enable you to open links and mailto's with external applications...

Folderpane Tools by chuonthis, Philip Chee

Rated 3 out of 5 stars 125 reviews

177 users

Allows for customization of the folder pane. Accounts can be rearranged and the startup folder can be chosen.

QuoteCollapse by Michael J Gruber

Rated 4 out of 5 stars 32 reviews

992 users

Collapse and expand quotes.

Contributors: Stanimir Stamenkov, Dillinger

FxIF by Christian Eyrich, Ted Mielczarek

Rated 4 out of 5 stars 96 reviews

41 users

View EXIF data in image properties

Mnenhy by Karsten "Mnyromyr" Düsterloh

Rated 4 out of 5 stars 39 reviews

24 users

The primary goal of the Mnenhy project is to make some enhancements to SeaMonkey MailNews/Thunderbird, since there're still plenty of comfort functions missing if compared to Netscape 4.x and other mail and news clients.

Config Descriptions by Dave G

Rated 5 out of 5 stars 25 reviews

9 users

Shows source comments for advanced application preferences in about:config
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