Recently Updated Extensions

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Zonio Freebusy for Lightning

Finds when are people available for a meeting or event via Zonio Freebusy service. Displays freebusy blocks instantly in Invite Attendees window while attendees are being added. Works with both local calendar storage or any calendar provider.

Not yet rated
5 users
Updated July 27, 2016

CardBook

A new Thunderbird address book based on the CardDAV and vCard standards.

Rated 4 out of 5 stars (61)
4,525 users
Updated July 27, 2016

TexTra Thunderbird

Thunderbirdのメールのテキストを翻訳、辞書引きを行います。

Not yet rated
12 users
Updated July 27, 2016

ViewAbout

Enables access to various about: dialogs from the View menu.

Rated 4 out of 5 stars (17)
2,938 users
Updated July 27, 2016

Mail Merge Featured

Mass Mail and Personal Mail

Rated 5 out of 5 stars (142)
51,062 users
Updated July 25, 2016

TOrPeDO - TOoltip-poweRed Phishing Email DetectiOn

TOrPeDO ist ein Tool zum Erkennen von betrügerischen Links (Phishing). Bewegen Sie die Maus über einen Link in einer Email. TOrPeDO zeigt Ihnen die tatsächliche Webadresse in einem Tooltip an und hilft Ihnen, diese zu untersuchen.

Rated 4 out of 5 stars (4)
1,089 users
Updated July 25, 2016

No Resource URI Leak No Restart

Deny resource:// access to Web content: We fill the hole to defend against fingerprinting. Very important to Firefox privacy. A direct workaround for bugzil.la/863246

Rated 5 out of 5 stars (13)
4,077 users
Updated July 25, 2016

QuickFolders (Tabbed Folders)

The "Swiss army knife" of folders. Turn your favorites into tabs - open folders and subfolders, move mails without scrolling around or searching. powerful + easy.

See new mail at a glance after automatic filtering - supports quickFilters addon!

Rated 5 out of 5 stars (112)
23,549 users
Updated July 24, 2016

MultiTemplateLoader

Manages & applies multiple HTML templates when creating/replying messages.

Templates may be either local files or online links (http:// or ftp://). Up to 9 templates can be defined and easily switched, also using shortcut keys.

Not yet rated
2 users
Updated July 23, 2016

Addons Manager Hilite No Restart

Remembers last selected (hilited) extension/theme/plugin/userstyle in Add-ons Manager. Version 3.0 also includes sorting buttons. Turn off/on the add-on selection list box and/or fine tune behavior via its Options.

Rated 5 out of 5 stars (18)
714 users
Updated July 23, 2016

Todo.txt Extension

Thunderbird extension for the Todo.txt application

Rated 4 out of 5 stars (5)
387 users
Updated July 22, 2016

S3.Google Translator

S3.Google Translator adds the power of Google Translate’s automatic translations to your browser!
It supports translation of selected text, entered phrase or whole webpage between any of 80+ languages.

New Feature: Language learning!

Rated 5 out of 5 stars (346)
344,744 users
Updated July 22, 2016

Identity Checker

This add-on checks to sender identity when send a message.

Not yet rated
4 users
Updated July 22, 2016

Tategaki

Tategaki allows vertical writing-mode on mail compose window.

Not yet rated
14 users
Updated July 22, 2016

Notepad (QuickFox)

Everyday note-taking solution.

Rated 4 out of 5 stars (192)
19,727 users
Updated July 22, 2016

Send Later

True "Send Later" functionality to schedule the time for sending an email.

Rated 5 out of 5 stars (69)
61,171 users
Updated July 21, 2016

HTTPS Everywhere

Encrypt the web! HTTPS Everywhere is a Firefox extension to protect your communications by enabling HTTPS encryption automatically on sites that are known to support it, even when you type URLs or follow links that omit the https: prefix.

Rated 4 out of 5 stars (102)
189,616 users
Updated July 21, 2016

Cert Viewer Plus

Certificate viewer enhancements: PEM format view, trust configuration

Rated 4 out of 5 stars (6)
4,251 users
Updated July 20, 2016

ReminderFox

ReminderFox displays and manages lists of reminders and ToDo's. ReminderFox makes sure you remember all of your important dates via easy-to-use lists, alerts, and alarms, right in your browser without the need for a separate calendar program.

Rated 4 out of 5 stars (527)
76,758 users
Updated July 20, 2016

Theme Font & Size Changer No Restart

Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.

Rated 5 out of 5 stars (173)
95,117 users
Updated July 20, 2016