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QuickNote Requires Restart

A simple note-taking extension.

Rated 5 out of 5 stars (204)
70 users

Mail Redirect Requires Restart

Allow to redirect (a.k.a. "remail") mail messages to other recipients.

Rated 4 out of 5 stars (144)
3,272 users

Download Status Bar

If you are the kind of person who likes to have total control over every aspect of your downloads, "Download Status Bar" is the add-on you are looking for.

Rated 5 out of 5 stars (437)
79 users

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)
1,105 users

PrintingTools Requires Restart

Adds some options to print messages and addressbooks

Rated 4 out of 5 stars (43)
1,110 users

Dafizilla Table2Clipboard Requires Restart

Mozilla applications allow to select rows and columns from a table simply pressing Control key and picking rows/columns with left mouse button.
The selection can be copied to clipboard but the original table disposition is lost making ugly results wh...

Rated 5 out of 5 stars (75)
17 users

Google Calendar Tab Requires Restart

Adds the Google Calendar web interface as a new tab directly into Thunderbird. Creating and viewing events works just as it would in a browser like Firefox

Rated 4 out of 5 stars (104)
85 users

Dorando keyconfig Requires Restart

A modified Dorando's addon to rebind keyboard shortcuts. It is designed to be a drop-in replacement, keeping your old settings. (See details for upgrade instructions.)

As of version 2016.2, Custom keys (using custom JavaScript) work again!

Rated 5 out of 5 stars (65)
310 users

DOM Inspector Requires Restart

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.

Rated 5 out of 5 stars (78)
14,965 users

AutoCopy Requires Restart

Select text and it's automatically copied to the clipboard. Also pastes on middle click.

Rated 4 out of 5 stars (507)
5 users

Auto Compress File Requires Restart

Compressor for attachment files. All platforms are supported (Windows, Linux and Macintosh).

Rated 5 out of 5 stars (18)
996 users

Minimize On Start and Close Requires Restart

A remake of the MinimizeToTray-extension made to fit the Windows 7 taskbar. Instead of minimize the window to the tray it minimize it to the taskbar. It can minimize on startup, when the window is closed and/or when the esc key is pressed.

Rated 4 out of 5 stars (112)
147 users

Music World Anonymous Quick Button Requires Restart

A quick button link to MusicWorldAnonymous.com. Music World Anonymous is a site about helping bands find fans for free!

Rated 5 out of 5 stars (1)
0 users

Font Finder Requires Restart

FontFinder is created for designers, developers and typographers. It allows a user to analyze the font information of any element on a page, copy any piece(s) of that information to the clipboard, and perform inline replacements to test new layouts.

Rated 4 out of 5 stars (80)
7 users

Provider for Microsoft Exchange Requires Restart

The lightning-exchange-provider addon allows you to use Microsoft Exchange calendars in Thunderbird, via Exchange’s web services.

This addon only works with Microsoft Exchange 2007 and above. Exchange 2003 is not supported.

Rated 4 out of 5 stars (56)
8 users

Add-ons Manager Context Menu Requires Restart

Add more items to Add-ons Manager context menu.

Rated 5 out of 5 stars (49)
27 users

Disable Addon Compatibility Checks (Version 4-56)

Reinstates the extensions.checkCompatibility preference.

Rated 4 out of 5 stars (6)
43 users

Toggle Proxy Requires Restart

The move to Webextensions by Mozilla for Firefox 57+ has made it impossible to modify about:config, this holds Firefox proxy settings. Therefore, this and many other addons will become obsolite from Firefox 57+ onwards unless Mozilla update the API.

Rated 4 out of 5 stars (51)
3 users

Address Close Button Requires Restart

Adds a Address Close Button to mail compose window.

Rated 5 out of 5 stars (26)
352 users

Copy Plain Text 2 Requires Restart

Copies text without formatting

Rated 5 out of 5 stars (98)
55 users