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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)
6 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)
6 users

AutoProxy-ng Requires Restart

This is a fork of AutoProxy, which can run the latest version of Firefox.

Rated 5 out of 5 stars (35)
2 users

EMail Address Crawler Requires Restart

Automatically fill your address books or send mass mails with e-mail addresses extracted from all your e-mails.

Rated 4 out of 5 stars (97)
13 users

Duplicate Contact Manager Requires Restart

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

Rated 3 out of 5 stars (114)
92 users

South African English spell checker Requires Restart

The South African English spell checker allows you to use place names, borrowed words, and other expressions that are unique to South Africa.

"No more eina, just a lekker spell checker!"

Rated 5 out of 5 stars (3)
3 users

Firesizer Requires Restart

Allows you to resize the window to specific dimensions.

NOTE: Users of Firefox 29 and above must install "The Addon Bar" extension to use this, as Firesizer uses the add-on bar that has been removed in Firefox 29.

Rated 4 out of 5 stars (127)
10 users

Signature /Auto Paste /Prefill Fourms Requires Restart

Makes everyday entries to forms & forums simpler!
Add a sig. with just a Rclick of the mouse and select 'Add Sig.' from the context menu.
(Please, note: What you see in the pic is only an example. ThoseRMine Sorry, you have to make your own tabs. )

Rated 4 out of 5 stars (30)
33 users

ThunderBrowse Requires Restart

Did your friend send you a cool link? Want to read the rest of that interesting article? Don't want to open up your web browser just to view it? You don't have to! Just view it in Thunderbird with ThunderBrowse!

Rated 3 out of 5 stars (155)
60 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)
2 users

Asciidoctor for Thunderbird Requires Restart

Type some text in your mail's body, hit the asciidoctor button and transform your mail into a pretty html5 asciidoctor document. Font awesome and code highlighting are enabled.

Rated 5 out of 5 stars (1)
1 user

Thunderbird Message Filter Import/Export Requires Restart

Thunderbird Message Filter Import/Export is a thunderbird/mozilla extension to import/export message filters.

Rated 3 out of 5 stars (72)
5 users

Auto Address Cleaner Requires Restart

Removes comment, display name automatically from addresses before sending mail.

Rated 5 out of 5 stars (57)
261 users

Address Close Button Requires Restart

Adds a Address Close Button to mail compose window.

Rated 5 out of 5 stars (26)
262 users

Copy Plain Text 2 Requires Restart

Copies text without formatting

Rated 5 out of 5 stars (98)
51 users

ansitel Click-to-Dial MT Requires Restart

Dieses Plugin ermöglicht das Wählen von markierten Rufnummern im Mozilla Thunderbird mit ansitel VoIP-Telefonanlagen. Einfach Rufnummer markieren und per Rechtsklick mit der Maus loswählen.

Rated 5 out of 5 stars (1)
0 users

Rikaichan Japanese-English Dictionary File Requires Restart

This is a dictionary file add-on for the Rikaichan extension.

Rated 5 out of 5 stars (11)
11 users

EHTip Requires Restart

Word translation in tooltip with English⟷Croatian dictionary already incorporated.

Rated 5 out of 5 stars (64)
0 users

GProxy Tool Requires Restart

GProxy lets you set and clear GPass local proxy in Firefox and Thunderbird, and do more.

Rated 4 out of 5 stars (8)
1 user

AVIM Requires Restart

Vietnamese-language input method editor (IME). Type diacritics directly into any Web page, Web app, or dialog box. Convenient, comprehensive, secure.
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Bộ gõ tiếng Việt cho phép đặt dấu trực tiếp vào bất kỳ trang Web, ứng dụng Web, hộp thoại.

Rated 5 out of 5 stars (41)
1 user