Extensions by Weekly Downloads

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Image Zoom Featured

Adds zoom and rotation functionality for images...

Rated 4 out of 5 stars (307)
3,581 weekly downloads

gTranslate

With gTranslate you can translate any text in a webpage just by selecting and right-clicking over it. The extension uses the Google translation services to translate the text.

Rated 4 out of 5 stars (377)
3,567 weekly downloads

MinimizeToTray revived

Minimizes windows into the system tray.

Rated 5 out of 5 stars (236)
3,526 weekly downloads

Enigmail Featured

OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.

Rated 4 out of 5 stars (155)
2,901 weekly downloads

Google Contacts

Access to Google contacts and synchronize them with Thunderbird address books.

Rated 4 out of 5 stars (214)
2,639 weekly downloads

LookOut Featured

LookOut is a plugin which allows Thunderbird to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).

Rated 4 out of 5 stars (133)
2,517 weekly downloads

Saved Password Editor

Adds the ability to create and edit entries in the password manager.

Rated 5 out of 5 stars (156)
2,472 weekly downloads

UnMHT No Restart

UnMHT allows you to view MHT (MHTML) web archive format files, and save complete web pages, including text and graphics, into a single MHT file in Firefox/SeaMonkey.

Rated 5 out of 5 stars (182)
2,274 weekly downloads

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 (420)
2,174 weekly downloads

KeeFox

Simple and secure password management. Login automatically, never forget another password, stay in control of your passwords and improve their security. Powered by the world-renowned KeePass Password Safe.

Rated 5 out of 5 stars (536)
2,127 weekly downloads

eCleaner

Clears preferences left by extensions after uninstallation

Rated 4 out of 5 stars (52)
1,902 weekly downloads

Thunderbird Conversations No Restart

This addon provides a conversation view for Thunderbird, grouping messages together and allowing you to reply "inline" thus providing a more efficient workflow.

The latest version is compatible with Thunderbird 24+ only (see below for details).

Rated 4 out of 5 stars (317)
1,848 weekly downloads

FoxyProxy Basic

FoxyProxy Basic is a simple on/off proxy switcher. More advanced features and configuration options are offered by FoxyProxy Standard.

Rated 4 out of 5 stars (23)
1,724 weekly downloads

Classic Toolbar Buttons No Restart

'Classic Toolbar Buttons' add-on restores old toolbar button ui (known from Fx 4-7s small view, Fx 4-12s large view & Tb 5-14) for current Firefox, Thunderbird and Seamonkey versions on Windows.

Beta builds on versions page!

Rated 5 out of 5 stars (78)
1,706 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 (37)
1,687 weekly downloads

Clean Links No Restart

Converts obfuscated/nested links to genuine clean links.

Eg: http://somesite.com/?to=www.example.comhttp://www.example.com/

Rated 5 out of 5 stars (38)
1,648 weekly downloads

Tiny JavaScript Debugger

TinyJSD is a JavaScript debugger for privileged code running Mozilla products like Firefox, Thunderbird, SeaMonkey. It serves to debug the application as well as extensions written in JavsScript.

Rated 4 out of 5 stars (3)
1,606 weekly downloads

SmoothWheel

Scrolls the page smoothly when scrolling the mouse wheel (or keyboard arrows if enabled).

Rated 5 out of 5 stars (226)
1,600 weekly downloads

FoxClocks

FoxClocks shows times around the world - or just your local time - at the bottom of your browser. It deals with daylight saving time so you don't have to.

Rated 4 out of 5 stars (280)
1,572 weekly downloads

Quick Locale Switcher

Allows you to quickly switch to a different language (User Interface, Spell Checker Dictionary and Website content) in your Mozilla application.

Rated 4 out of 5 stars (68)
1,519 weekly downloads