Miscellaneous

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ProfileSwitcher

It adds some options to launch easily other profiles and the Profile Manager.

Rated 4 out of 5 stars (73)
1,857 weekly downloads

Copy As Plain Text

Removes formatting from copied text.

Rated 4 out of 5 stars (57)
1,818 weekly downloads

Environment Proxy

Sets proxy settings from environment variables.

Rated 4 out of 5 stars (8)
1,741 weekly downloads

Restartless Restart No Restart

This 15KB restartless add-on will add a "File" -> "Restart" menu item and a ctrl/cmd + alt + r hotkey to restart Firefox or Seamonkey.

Rated 5 out of 5 stars (191)
1,702 weekly downloads

Exif Viewer

Displays the Exif and IPTC data in local and remote JPEG images.

Rated 4 out of 5 stars (84)
1,667 weekly downloads

Google Calendar Tab

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 (81)
1,643 weekly downloads

Quicktext

Quicktext is an extension for Thunderbird that lets you create templates that can be easily inserted into your own emails.

Rated 4 out of 5 stars (276)
1,533 weekly downloads

Mail Redirect Featured

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

Rated 4 out of 5 stars (126)
1,411 weekly downloads

DOM Inspector

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 (65)
1,404 weekly downloads

Filter Uploader for Adblock Plus

DOES NOT BLOCK ADS! Don't install this add-on if you don't know what 'uploading' means!

This add-on Uploads the filters from your Adblock Plus installation to a FTP, HTTP, HTTPS server...

Rated 3 out of 5 stars (45)
1,275 weekly downloads

Toggle Proxy

Toggle Proxy adds a status bar/toolbar icon to toggle between two proxy settings which can be set in the preferences or toggle via a shortcut key (alt + x) if you don't use the add-on bar.

Rated 4 out of 5 stars (43)
1,209 weekly downloads

Cleanest Addon Manager No Restart

Cleanup your Addon Manager

Rated 5 out of 5 stars (129)
1,197 weekly downloads

Provider for Microsoft Exchange

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)
1,111 weekly downloads

Extension Auto-Installer No Restart

Extension Auto-Installer is a helper for Firefox/SeaMonkey/Thunderbird extension developers: it allows automatically adding or updating browser extensions, e.g. via command line tools. This makes testing your changes easier.

Rated 5 out of 5 stars (15)
1,088 weekly downloads

Extra Folder Columns Featured

This extension is for those TB3 users who want the multiple-columns view that TB2 allowed

Rated 4 out of 5 stars (246)
1,030 weekly downloads

Minimize On Start and Close

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 (97)
883 weekly downloads

NewScrollbars (aka NoiaScrollbars)

The "NewScrollbars"-extension replaces default scrollbars of Firefox and Thunderbird with colorized ones (partly) known from "Noia themes".

Rated 5 out of 5 stars (103)
879 weekly downloads

Nightly Tester Tools

Useful tools for the nightly tester.

Rated 4 out of 5 stars (191)
797 weekly downloads

AutoCopy 2

Copies selected text to the clipboard automatically.

Rated 5 out of 5 stars (58)
722 weekly downloads

Themes Menu

Adds Themes menu to the Tools and Titlebar menus. Includes toolbar icon.

Rated 4 out of 5 stars (16)
708 weekly downloads