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JavaScript Debugger Requires Restart

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.

Rated 4 out of 5 stars (52)
16,605 users
Added Aug. 11, 2004

DirSwitcher Requires Restart

Change direction in compose...

Not yet rated
0 users
Added Aug. 10, 2004

View Headers Toggle Button Requires Restart

This extension adds a toolbar button that allows the easy toggling of viewing all message headers.

Rated 3 out of 5 stars (29)
5 users
Added Aug. 7, 2004

StockTicker Requires Restart

Shows your favorite stocks in a customizable...

Rated 3 out of 5 stars (80)
0 users
Added July 20, 2004

Quote Colors Requires Restart

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.

Rated 5 out of 5 stars (49)
2,547 users
Added July 12, 2004

addressContext Requires Restart

An extension to add addressbook-related options to the context...

Rated 4 out of 5 stars (49)
23 users
Added July 6, 2004

Show SMTP Username Requires Restart

Displays username (if available) next to SMTP...

Rated 1 out of 5 stars (1)
0 users
Added July 4, 2004

Delete Junk Context Menu Requires Restart

Adds 'Delete Mail Marked as Junk' to folders' right click...

Rated 4 out of 5 stars (8)
9 users
Added July 4, 2004

Moji Requires Restart

An integrated sidebar-dictionary for Japanese and Chinese including kanji dictionary.

Rated 4 out of 5 stars (9)
33 users
Added July 4, 2004

Image Zoom Requires Restart

Adds zoom and rotation functionality for images...

Rated 4 out of 5 stars (354)
4,124 users
Added July 3, 2004

Copy Plain Text Requires Restart

Copies text without formatting...

Rated 4 out of 5 stars (185)
13 users
Added July 3, 2004

Forumzilla Requires Restart

Forumzilla lets you read news and blog feeds in your email application. It is similar to the feed reader built into Thunderbird, but it lets you download stories into any folder in any POP, IMAP, or local account (configurable per...

Rated 3 out of 5 stars (5)
0 users
Added July 1, 2004

Open Long Url Requires Restart

Adds an option to your File menu to allow you to open long, multi-line...

Rated 5 out of 5 stars (7)
0 users
Added June 30, 2004

Easy Get Mail Button Requires Restart

Makes the 'Get new messages' button context-sensitive. Select an account root folder to get messages for that account, any other folder to get messages for all...

Rated 5 out of 5 stars (1)
1 user
Added June 16, 2004

Buttons! Requires Restart

Adds buttons to the Thunderbird toolbars such as Next! and Previous! buttons for navigating through all messages instead of just unread ones. See homepage for more...

Rated 4 out of 5 stars (61)
9 users
Added June 16, 2004

Launchy Requires Restart

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

Rated 3 out of 5 stars (87)
213 users
Added June 15, 2004

Enigmail Featured

OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.

Rated 4 out of 5 stars (221)
140,295 users
Added June 14, 2004

Contacts Sidebar Requires Restart

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.

Rated 4 out of 5 stars (243)
4,300 users
Added June 14, 2004

InspectorWidget Requires Restart

Adds toolbar button and context menus for invoking the DOM Inspector (DOMi) for either chrome or content elements.

Rated 5 out of 5 stars (10)
84 users
Added June 14, 2004

QuickNote Requires Restart

A simple note-taking extension.

Rated 5 out of 5 stars (203)
1,625 users
Added June 12, 2004