Miscellaneous

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Element Hiding Helper for Adblock Plus No Restart

Fight the text ads! Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier.

Rated 5 out of 5 stars (443)
25,391 weekly downloads

Download Status Bar No Restart

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 (322)
15,852 weekly downloads

SQLite Manager

Manage any SQLite database on your computer.

Rated 5 out of 5 stars (34)
12,347 weekly downloads

ImportExportTools

Adds some tools to import and export folders and messages

Rated 4 out of 5 stars (120)
11,068 weekly downloads

Provider for Google Calendar

Allows bidirectional access to Google Calendar

Rated 4 out of 5 stars (994)
8,926 weekly downloads

JavaScript Debugger

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 (49)
7,465 weekly downloads

Personas Plus

Personas are free, easy-to-install "skins" for Firefox. Personas Plus extends that built-in functionality to give you even more control and easier access to new, popular, and your own favorite Personas.

Rated 3 out of 5 stars (952)
7,317 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 JavaScript.

Rated 4 out of 5 stars (5)
3,921 weekly downloads

MinimizeToTray revived

Minimizes windows into the system tray.

Rated 5 out of 5 stars (297)
3,897 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 (204)
3,152 weekly downloads

Copy As Plain Text

Removes formatting from copied text.

Rated 4 out of 5 stars (51)
2,986 weekly downloads

Signature Switch Featured

Switch the signature on/off or choose a new one from your predefined set...

Rated 4 out of 5 stars (164)
2,760 weekly downloads

Music World Anonymous Quick Button

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)
2,494 weekly downloads

Font Finder

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 (65)
2,090 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 (141)
2,025 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 (223)
1,894 weekly downloads

Toolbar Buttons No Restart

Adds toolbar buttons to the customize toolbar window in several programs including Firefox, Thunderbird and SeaMonkey. Some of the buttons make commonly preformed actions quicker, others add new functionality.

Rated 4 out of 5 stars (316)
1,868 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 (260)
1,814 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)
1,771 weekly downloads

Copy Plain Text 2

Copies text without formatting

Rated 5 out of 5 stars (56)
1,558 weekly downloads