Free Software Directory:IceCat extensions (proposed)

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This page has been superseded by FSD:IceCat WebExtensions (proposed) because Firefox 57 (so IceCat 57) will ONLY run WebExtensions Firefox 57.

Only legacy add-ons are listed here, WebExtensions found on this page later will be merged to FSD:IceCat WebExtensions (proposed).

+1 M Daily Users

The first and only download manager/accelerator built inside Firefox!

FlashGot Mass Downloader
Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.

100-999 k Daily Users

All-in-One Gestures
This extension allows you to execute common commands using mouse gestures, rocker navigation, scroll wheel navigation and page... Review note: FireGestures better

All-In-One Sidebar AiOS lets you open various windows as sidebar panels, and quickly switch between them. So it put an end to the window chaos! In addition to bookmarks and history it opens dialogues such as downloads, add-ons and more in the sidebar.

A clean, easy to use and highly extensible Internet Relay Chat (IRC) client.

Classic Theme Restorer (Customize UI)
Squared tabs, appmenu, add-on bar, small button view and many more 'old' features for Firefox 29+ (Windows / MacOSX / Linux).

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.

Download Status Bar
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.

Element Hiding Helper for Adblock Plus
Fight the text ads! Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier. Review note: Not compatible with SpyBlock. This add-on requires the following add-ons to work properly: Adblock Plus, Adblock, or SpyBlock

Fast Dial
Visual bookmarks for Firefox. (Works with all latest versions of Firefox)

FEBE (Firefox Environment Backup Extension) allows you to quickly and easily backup your Firefox extensions. In fact, it goes beyond just backing up -- It will actually rebuild your extensions individually into installable .xpi files.

FireFTP is a free, secure, cross-platform FTP/SFTP client for Mozilla Firefox which provides easy and intuitive access to FTP/SFTP servers.

A customizable mouse gestures extension which enables to execute various commands and user scripts with six types of gestures.

With gtranslate you can translate any text in a web page just by selecting and right-clicking over it. The extension uses the Google translation services to translate the text. Review note: Service Unavailable

An HTTP analyzer addon for Firefox

Image Zoom
Adds zoom and rotation functionality for images...

ImgLikeOpera allows load only the images that you want in Firefox browser. This extension is very useful for non broadband users... Review note: Add-on author: “This extension is very useful for non broadband users.”

Live HTTP Headers
View HTTP headers of a page and while browsing.

MinimizeToTray revived
Minimizes windows into the system tray.

Mozilla Archive Format, with MHT and Faithful Save
Open web pages saved with Internet Explorer or other browsers (MHT). Save many tabs, video and audio reliably, in a single ZIP file (MAFF). Return to the original site you saved a page from, and more!

Noia Fox
me for Firefox and Thunderbird. Based on Noia Iconpack by Carlitus (deviantART). Noia Fox options is here (small icons, square tabs,...).

Password Exporter
This extension allows you to export your saved passwords and disabled login hosts using XML or CSV files that can be imported later.

Allows quick enable and disable of Java, Javascript, Cookies, Image Animations, Flash, Silverlight, Images, Stylesheets and Proxy from the Toolbar. This is great for increasing security or decreasing bandwidth. Review note: Also popularly used to block Flash.

Reloads web pages every so many seconds or minutes. The function is accessible via the context menu (menu you get when you right click on a web page) or via tab context menu (right click on the tab)

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. Review note: Popups are seen outside the Firefox window which is great as you get reminded no matter in which software you work.

Helps you to save Web pages and organize the collection.

Self-Destructing Cookies
Fix the web. Gets rid of a site's cookies and LocalStorage as soon as you close its tabs. Protects against trackers and zombie-cookies. Trustworthy services can be whitelisted.

Session Manager
Session Manager saves and restores the state of all or some windows - either when you want it or automatically at startup and after crashes. It can also automatically save the state of open windows individually. Review note: You have to enable it: Preferences -> Startup & Shutdown: Select session <Previous Browsing Session>

SQLite Manager
Manage any SQLite database on your computer.

Status bar widgets and progress indicators for Firefox 4+ Review note: Only Add-on Bar correctly licensed

Super Start
Just another speed dial extension. Fast and easy to use.

Tab Mix Plus
Tab Mix Plus enhances Firefox's tab browsing capabilities. It includes such features as duplicating tabs, controlling tab focus, tab clicking options, undo closed tabs and windows, plus much more. It also includes a full-featured session manager.

Tab Scope
Preview and navigate tab contents through popup.

Tamper Data
Use tamperdata to view and modify HTTP/HTTPS headers and post parameters...

The Addon Bar (Restored)
Gives you a place to put all your add-on buttons without over-crowding the navigation bar.

Toolbar Buttons
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.

Manage popular downloaders (Windows, Linux, Mac) and support special links of thunder,flashget,qqdl,ed2k,magnet,fs2you.

Play all videos on youtube without flash in your preferred size using only HTML5. Review note: HTML5 Video Everywhere! prefered.

Youtube Downloader 4K
Download from YouTube 4K videos and thousands other video websites.

10-99 k Daily Users

Bluhell Firewall
Get a faster browsing experience by blocking nasty web resources using Bluhell Firewall, the lightweight Ad-Blocker and Tracking/Privacy Protector.

Copy Urls Expert
Provides options to 'Copy Urls of All Opened Tabs in Current Window', 'Copy Urls of Tabs in All Windows', 'Copy Urls of All Links in Selected Text' and 'Copy Urls of All Images in Selection'. Allows to open multiple tabs.

YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages.

Add to Search Bar Make any pages' search functionality available in the Search Bar (or "search box")...

Advanced Cookie Manager A must have tool for Web Developers and Testers to Manage and monitor web cookies. Features List: Add, Delete, Modify, Export / Backup, Import / Restore, Monitor cookies Review note: Only add-on that we are aware of that can do all these things (especially modify cookies).

Anti-Porn Pro
Cloudacl WebFilter is cloud based porn content filtering application monitoring millions web sites and billion of web pages to keep you family especially your kids away from sex, nudity and adult content.


Bamboo Feed Reader
Feed reader

telnet client extension specifically designed for BBS browsing.

It support mouse browsing and FireGestures script.

Cache Status
Easy cache status & management from status...

Calomel SSL Validation

Certificate Patrol
Your browser trusts many certification authorities and intermediate sub-authorities quietly, every time you enter an HTTPS web site. This add-on reveals when certificates are updated, so you can ensure it was a legitimate change.

Clear Console

Configuration Mania

Cookie Controller

Extended Cookie Manager - Keep only wanted cookies. Review note: Self-destructing cookies prefered

Custom Tab Width
Lets you customize the minimum and maximum tab width.

Dafizilla Table2Clipboard
Review note: Especially useful in the context menu is “Table2Clipboard - Select column” as you can select muliple and specific columns.

Disconnect Search Review note: Default search engine in Tor Browser Bundle

FireSSH is a free, cross-platform SSH terminal client for Mozilla Firefox. Written entirely in Javascript!

Image Block
Image Block adds a toggle button that conditionally blocks/allows loading of images on webpages. Blocking images results in faster browsing, especially helpful on handheld devices or slower connections like GSM/GPRS/EDGE dial-up etc.

InstantFox Quick Search

Simulate the use of a series of proxy changing at each new connection.

It's All Text!
Edit textareas using an external editor, because it's all text!

JavaScript Deobfuscator
This add-on shows you what JavaScript code runs on a web page, even if it is obfuscated and generated on the fly. Simply open JavaScript Deobfuscator from the Web Developer menu and watch the scripts being compiled/executed.

LavaFox V2
LavaFox - A dark and hot theme for Firefox. Fully skinned and animated.

LeechBlock is a simple productivity tool designed to block those time-wasting sites that can suck the life out of your working day. All you need to do is specify which sites to block and when to block them.

Locale Switcher
Displays a menu item for switching the application locale. Review note: Outdated but useful backup add-on in case Simple Locale Switcher doesn't work.

Master Password+
Various enhancements for build-in "master password" (MP).

No Flash
Replace Youtube and Vimeo Flash video players embedded on third-party website by the HTML5 counterpart when the content author still use the old style embed (Flash). HTML5 Video Everywhere! Notes: "Some legacy sites force using Flash player, you will need to install no-flash add-on to support them."

Private Tab
Adds private tabs.

ProCon Latte Content Filter



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

Selenium IDE Button
Just one simple toolbar button to open Selenium IDE. You need to have installed Selenium IDE:

Silent Block
Minimum and fast URL blocker by regular expression.

Simple Locale Switcher
An easier management of the user interface language Review note: Needed to install another language. Also useful to test language packs.

Tor Flashproxy Badge
Simple extension that makes Firefox a bridge for censored users in countries with oppressive regimes.

Torrent Tornado
A Torrent Client for Firefox and SeaMonkey, runs everywhere, created in pure JavaScript without binary software!

Control what gets sent as the User-Agent on a per-site basis.

Make Firefox look and behave like Vim

Generate a PDF from webpage. Convert Webpage to PDF or Image. It will convert all the contents of webpage which is not in visible area also. No Server processing.Supports different resolution also

Professional Geo Add-on with security features and advanced network tools. Anti-phishing. Protection against DNS spoofing and fake sites. All DNS records for domain. The real location of web server, country flag, extended information about datacenter.

0-9 k Daily Users


Mozilla Firefox hotfix
This official add-on enables Firefox to provide quick fixes for selected issues. Review note: For old browsers

Updated Ad Blocker for Firefox 11+
It blocks ads on the web pages you visit including Youtube, Hulu, TwitchTV/JustinTV, most Major News Sites(cnn/fox/nbc/msnbc) and many more. Ads from services like Google AdSense Yahoo DoubleClick It also blocks the GoogleAnalytics tracking script.

Aeon Big
Aeon Big is a big, bright theme for when you need large icons on your browser.

Blender (IceCat add-on)

Clear Site Cache
Quick one click solution to clear the cached contents of the site you are currently browsing. Review note: This add-on should be part of Firefox: 1) By default you can clear site specific cookies from the context menu under View Page Info. 2) Under Preferences - Advanced - Network - the Clear Now button under Cached Web Content will wipe the entire cache, there is no way to clear the cache for a given site.

CLEO (Compact Library Extension Organizer) is a Firefox extension that works with FEBE* to package any number of extensions/themes into a single, installable .xpi file.

Prevent accidental interaction with tab contents. Donations will go to FSF, a US 501(3) charity for software freedom.

If you have multiple logins for web based e-mail accounts (like Gmail and Yahoo! mail), then CookieSwap enables you to easily switch between those different accounts by swapping the 'cookies' that the sites use to know you.

Disable DHE
For old browsers: Disables ephemeral Diffie-Hellman cipher suites that are vulnerable to the logjam attack.

Disable HTML5 Fullscreen Alert
Disable the alert to allow/deny viewing fullscreen HTML5 videos and pictures.

Disable Speculative Pre-connections
Hide in the forest, with speculative pre-connections cleanly disabled.

Disable Visited Links This plugin cleanly disables visited link styles.

HTTP Nowhere
Block unencrypted web traffic for added security.

jQuery and jQuery UI embedded in browser

Multiple Addon Deactivator
Multiple Addon Deactivator (M.A.D) is an addon that can (de)activate one, many or each addon at the same time. Review note: Absolutely essential to test multiple addons.

New Add-on Bar
Restore add-on bar which was removed in the Australis theme.

New Plugin Disabler
Deactivates new plugins.

No Caption
Hide the caption of Firefox

No Resource URI Leak
Deny resource:// access to Web content: We fill the hole to defend against fingerprinting. Very important to Firefox privacy. A direct workaround for

NoRedirect lets the user take control of HTTP redirects. Review note: This is a useful add-on as neither of these browser settings protects against sophisticated popups: Preferences -> Content -> Block pop-up windows [enabled by default] and Preferences -> Advanced -> General -> Warn me when websites try to redirect or reload the page [enabled by default]. This add-on can be used to do that. Blocking redirects are useful to debug redirect based popups but requires specificed domains. RequestPolicy 0.5.28 asks if both popups and redirects should be visited (a feature that has been withdrawn in RequestPolicy Continued starting with version 1.0). However, RequestPolicy is run before uBlock.

Pan is based on autoproxy2, which is kind of combination of the AutoProxy and the Adblock Plus.

Plugin Disabler
Deactivates all plugins on startup.

Manage your tabs in sandboxes increasing your privacy!

Toggle Cipher Suites
This firefox addon provides a quick way to enable or disable various ssl3 cipher suites used in the browser.

This extension makes comparison pages of a lot more usable by making it possible to remove and restore rows in each table with a simple mouse click. Review note: Editing

YouTube Embed2Link

Zombie Navigator Automate any web workflow simply with Firefox! It's kind of SlimerJS as a Firefox addon. Lightweight and unintrusive! Donations will go to FSF, a US 501(3) charity for software freedom.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.