Free Software Directory:IceCat extensions (proposed)

See this page for approved add-ons listed in this page. See GNU IceCat add-on third-party repositories for tools for the add-ons in this page.

Currently over 500 stable and essential add-ons are listed.

Disclaimer: This page are compiled from two add-ons repositories, Trisquel web browser (~500 add-ons, merged 2015-03-18), and free add-ons from A List of Stable, Non-Conficting and Essential addons (picked from ~700 add-ons); Many add-ons are present in both repositories so its hard to say exactly how many add-ons that have been reviewed. Also note that the repository on this page has superseeded the these repositories for the following reasons: Many add-ons have been added that is not found in these repositories as add-ons here have been updated, removed, replaced for following reasons: incompatibility with IceCat 31.5.0 (based on Firefox ESR 31.5.0), buggy, superseeded, bad rating, not significant popular, Service as a Software Substitute (SaaSS), and known mass surveillance services (commercial cloud/social media). The reason why you don't find these add-ons on the IceCat page is because most of them have not been approved by the FSF. This list should be merged back to the Trisquel web browser repository meanwhile to do any good.

Add-ons that were listed on addons.mozilla.org without any license were manually downloaded and reviewed.

Urgent: Please help us setting up Greasemonkey as HTML5 Video Everywhere!, and GNU Gnash, are not sufficient to play videos on some popular websites. Some free Greasemonkey User Scripts, like ViewTubePlus can can be used to play these videos.

NOTE: The formatting of this collection was broken and some information was lost on the categorization.

In focus right now

DuckDuckGo (HTML SSL)	[ visit page] DuckDuckGo is the search engine that doesn't track you. We also have smarter answers and less clutter. This extension adds DuckDuckGo (non-JS HTML version) to the search bar. For more features, see the DuckDuckGo Plus add-on. Enjoy!
DuckDuckGo (Lite SSL)	[ visit page] DuckDuckGo is the search engine that doesn't track you. We also have smarter answers and less clutter. This extension adds DuckDuckGo (non-JS Lite version) to the search bar. For more features, see the DuckDuckGo Plus add-on. Enjoy!
Free Software Directory search	[ visit page] This is a search plugin for the Free Software Directory, a catalog of useful free software that runs under free operating systems.
Google Translate	[ visit page] Automatically translate from any language to your language.
Ixquick HTTPS Privacy Search Engine	[ visit page] Ixquick does not record your IP address. Search the Web in the best possible privacy!
Searx.me search	[ visit page] Search searx.me, a hackable metasearch engine.
Startpage (SSL)	[ visit page] Startpage is a search engine that does not collect or share personally identifiable information. This search bar add-on utilizes SSL to protect searches between You and Startpage.
Wikipedia (SSL)	[ visit page] Wikipedia is an openly-editable, free content internet encyclopedia. This search bar add-on utilizes SSL to protect searches between You and Wikipedia.

Other

1-Click YouTube Video Download	[ visit page] The simplest YouTube Video Downloader for all YouTube Flash sites, period.
about:addons-memory	[ visit page] (compatible version: https://addons.mozilla.org/firefox/downloads/file/238389/aboutaddons_memory-8-an+sm+fx-windows.xpi?src=version-history
Adblock Edge	[ visit page] Adblock Edge is a fork of the Adblock Plus version 2.1.2 extension for blocking advertisements on the web, without sponsored ads whitelist. Review notes: Developer recommends IceCat: “A very similar Example of a fork like Adblock Edge is GNUicecat which re branded and added additional privacy features to Mozilla Firefox.” - http://adstomper.bitbucket.org/Faqs.html Category:
Add Bookmark Here ²	[ visit page] Add a menuitem "Add Bookmark Here..." to Bookmarks...
Add to Search Bar	[ visit page] (compatible version: https://addons.mozilla.org/firefox/downloads/file/285224/add_to_search_bar-2.7-fx.xpi Make any pages' search functionality available in the Search Bar (or "search box")... Review notes: “You can add many search engines to your firefox search bar from the Mycroft Project website. I use search engines for many purposes from searching Song lyrics, to use the dictionary and the thesaurus, to search for an email in my GMail inbox, to search for people on Facebook etc. This addon is indispensable to me. I use it in the following ways (A). From the mycroft project website, I have added Google search for pages within the last 1 day, 1 week, 1 month and 1 year to the search box. This is immensely helpful. If I want latest news, I only search for webpages that have been updated/created within the last 1 day/1 week and so on. If I want to know about the latest research on Down's syndrome, I search using the Google search for 1 year. Perfect! (B). My translation needs are very basic. I use these three more efficient methods to translate pages or text within pages: 1. Bookmarklets 2. Flagfox addon 3. Simply go to the google translate page and use the "Add to Search bar" addon to right click in the translate box and Add it to your firefox search engines! Voila, now you can simply paste text in your firefox search bar and get its translation in a new tab. It becomes even better if you use the addon "Selected Search" too. With Selected Search, you don't need to paste your text in the search bar and press enter. If you have 'Selected Search' you only need to select the text you want to have translated and then press the button for google translate among the search engines that pop-up - a new tab with the translation pops up.” - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Add-on Compatibility Reporter	[Tags visit page] Help make Firefox better. The Add-on Compatibility Reporter enables you to report if the Firefox add-ons that you're using are working properly.
Add-ons Manager Context Menu	[ visit page] Add more items to Add-ons Manager context menu. Review notes: “Useful for people like me who have enabled 220 addons, and have another 200 disabled for later use. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Addons Manager Hilite	[ visit page]
Addons Quick Search	[ visit page] Type first letters of add-on name to find them in the list or press Ctrl+↑/↓ to switch between add-ons categories. Additionally remember and restore last selected item in each list.
Addons Recent Updates	[ visit page] Show more addons recent updates
AddressBarCleaner	[ visit page]
Advanced Cookie Manager	[ visit page] 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
Advanced URL Builder	[ visit page]
Aeon	[ visit page] A cool theme with pleasant colors.
Aeon Big	[ visit page] Aeon Big is a big, bright theme for when you need large icons on your browser.
Aeon Clouds	[ visit page] A cool theme with sky and clouds for background.
Aeon Colors	[ visit page] Aeon Colors is a fun, colorful theme that is bright and cheery.
Aeon Jumbo	[ visit page] Aeon Jumbo is a theme designed for when you need very large icons. Very helpful with 24-inch iMacs.
Aeon Small	[ visit page] A cool theme with pleasant colors. This theme uses the smaller of the toolbar iconsets from Aeon 6 and earlier. NOTE: To get a dropdown history from a forward or back arrow, right click on it.
All Tabs Helper	[ visit page]
All-In-One Sidebar	[ visit page] 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.
Allows to customize or disable most of the shortcuts offered by Firefox. This add-on does *not* allow to add new shortcuts.	[ visit page] Transforms typed or static text to L337, ROT13, BASE64, HEX, URL, BIN, DES, AES, Morse code, DVORAK keyboard layout and to lower/to upper case functionality, Leet Font...
Anti-Porn Pro	[ visit page] 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.
Auto Context	[ visit page]
Auto-Sort Bookmarks	[ visit page] Sort bookmarks by multiple criteria Review notes: “Right now it sorts bookmarks only by Alphabet. I have kept it in the list hoping that it will provide more options in the future. Although sorting bookmarks alphabetically is a good enough feature for most my needs. You see, sorting em alphabetically also results in sorting them by domain name in most cases. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
AutoAuth	[ visit page]
AutoCopy 2	[ visit page] Copies selected text to the clipboard automatically. Review notes: “ The best Autocopy addon out there. Remember this is not "Autocopy". This is "Autocopy 2". It can autocopy everything as plain text if used along with the "Copy Plain text 2" addon. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Automatic Save Folder	[ visit page] Review notes: “Thank you for installing Automatic Save Folder. Please, read this message carefully to make potential changes to your preferences. This page will only be displayed once, on first install or when important changes must be communicated.” Category:
Automatic window resizer	[ visit page] This Extension can automatically (or when manually called) fit the size of the firefox-window to the size needed to best display the current website or an object (flash, video, ...) on the page.
AutoPager	[ visit page] AutoPager automatically loads next pages when you reach the end of a page. It works on a ton of sites,Google,Yahoo.. It works well with most other add-ons adblock plus, WOT and most of the greasemonkey scripts. You can also try AutoPagerLite. Review notes: “ If you use an old or low resource computer, stay away from this. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Awesome Throbber	[ visit page]
Back to Top	[ visit page]
BackupFox	[ visit page]
Bamboo Feed Reader	[ visit page] Feed reader RSS - ATOM - OPML
BBSFox	[ visit page] telnet client extension specifically designed for BBS browsing. It support mouse browsing and FireGestures script.
Best Reader Lite	[ visit page]
Bitcoin Price Ticker	[ visit page]
BlackFox V2	[ visit page] BlackFox - A dark & hot theme for Firefox. Fully skinned and animated.
BlackFox V2-Blue	[ visit page] BlackFox - Blue version. A dark and hot theme for Firefox. Fully skinned and animated.
Blank Your Monitor + Easy Reading	[ visit page] BYM: Changes color combination ; left-click in the statusbar for changing its status (ON/OFF) or press Ctrl-Alt-B. ER: Makes text reading easy; select the text, right-click, select the "Easy Read" entry in the context menu or press Ctrl-Alt-Z
Blend In	[ visit page]
Bloody Vikings!	[ visit page] Simplifies the use of temporary e-mail addresses in order to protect your real address from spam. Supports inter alia 10minutemail.com and anonbox.net. Review notes: “Or use the addon Gish It(or GishIt's bookmarklet). Gish it is the best temporary email service out there. A pity it isn't a part of the Bloody Vikings addon. The Bloody vikings addon though offers you 10 free temporary email services to choose from.“ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Bluhell Firewall	[ visit page]
Bookmark All	[ visit page] Review notes: “Very useful to save tabs in a hurry, requires only one click. See also "Bookmark current tab set". “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=20 Category:
Bookmark Current Tab Set	[ visit page] Review notes: “ Bookmark Current Tab Set in one step( all tabs are bookmarked to a location you have already set in the settings) or two steps(a dialog pops up allowing you to chose a name and a location for the folder where the tabs will be bookmarked to). See also the addon "Bookmark all" which allows one step bookmarking described above. The advantage of "Bookmark all" is that it gives you a button that you can place anywhere you like and press to bookmark all addons - more convenient, but you cannot chose a custom name and location for the new folder thus created. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=23 Category:
Bookmark Deduplicator	[ visit page]
Bookmark Quick Mover	[ visit page]
Bookmark Tab	[ visit page] Bookmarks Tab is a very simpe and lightweight extension which displays a list of your bookmarks in the middle of newly opened tabs.
Bookmarks Checker	[ visit page] Check favorites for broken or bad links. It checks for bad links and displays a report if it finds something. Check for 404 links, timeout links.
Bookmarks Scrollbar	[ visit page]
Bookmarks Sidebar Scroll Retainer	[ visit page]
Bookstack	[ visit page]
Booky	[ visit page]
Boss Key and Buttons	[ visit page]
Bricks for Firefox	[ visit page] Bricks for Firefox, theme optimized for using your own background. Based on the Nautipolis/LittleFox framework.
Brief	[ visit page] Brief makes reading RSS feeds as easy and intuitive as it gets. Designed to have exactly the right set of features, it is powerful and simple at the same time. Feeds are presented on a seamless, interactive page which let's you bookmark and tag items with a single click.
Browser View Plus (PlayLink)	[ visit page]
Browsizer	[ visit page] Review notes: “Export only the contents of one bookmarks folder into a single HTML file. You can use the addon called "Flem" to get addon advantages. Flem reads urls within txt and html files and can load those urls one by one, all at the same time or selected urls in one go. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=26 Category:
BugMeNot	[ visit page] Bypass compulsory web registration with the context menu via www.bugmenot.com. Review notes: “Sometimes works, sometimes doesn't. BugMeNot also provides a bookmarklet. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Cache Status	[ visit page] Easy cache status & management from status...
CanvasBlocker	[ visit page] Blocks the JS-API for modifying <canvas> to prevent Canvas-Fingerprinting.</canvas>
Capture & Print	[ visit page] This add-on lets you print a webpage's area easily.
Certificate Patrol	[ visit page] 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.
ChatZilla	[ visit page] A clean, easy to use and highly extensible Internet Relay Chat (IRC) client.
Check4Change	[ visit page] Check4Change (aka C4C) is a simple extension that allows you to periodically check a web-page for updates... Review notes: “If you want to check a page for changes occurring over a period of days/weeks/months, use "Update Scanner". If you want to be alerted about changes that occur over seconds/minutes/hours, use "Check4Change". Following RSS Feeds, if a page makes them available is the best way to keep abreast of changes made to a webpage, but if a webpage does not make RSS feeds available, then using "Update Scanner" or "Check4Change" is the only way to check whether any changes have been made to the webpage.” - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
CheckFox	[ visit page]
ChmFox	[ visit page]
Classic Theme Restorer (Customize UI)	[ visit page] Squared tabs, appmenu, add-on bar, small button view and many more 'old' features for Firefox 29+ (Windows / MacOSX / Linux).
Classic Toolbar Buttons	[ visit page] '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.
Clean Links	[ visit page] Converts obfuscated or nested links to genuine clean links.
CLEO	[ visit page] 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.
Click&Clean	[ visit page] The quick and easy way to delete your browsing history, erase all temporary internet files, remove downloaded files history, cookies, Flash LSO, typed URLs. Allows to delete private data when Firefox closes. Supported ext. tools like CCleaner. Review notes: This is the only free add-on that we know can delete Flash LSO (flash coockies). Category:
Clickless Menu	[ visit page]
cliget	[ visit page] Download files using curl or wget. This addon generates curl/wget commands that emulate the request as though it's coming from your browser allowing you to download protected files directly to a separate machine (e.g. server).
Close other tabs	[ visit page]
Close Repeated Tabs	[ visit page]
Color Transform	[ visit page] Review notes: “In this list you will find the following addons to alter the look of a webpage 1. Color Transform 2. Blank Your Monitor 3. Textise 4. Column Reader 5. Tranquility 6. Readable. 7. No Squint Out of these BLANK YOUR MONITOR is my favourite because it is extremely fast at transforming the appearance of a page. It changes the page as per your settings within an eyeblink of your pressing the button. COLOR TRANFORM is almost equally fast, it has the advantage of being a lot more customisable; But Color Transform requires you to click on its button twice(rather than once like Blank your monitor) i.e once to open the pop-up that lists the various kinds of layouts you can choose, the second time to select a layout. TEXTISE simply gives you a text-only version of a webpage which is useful if you want to save a webpage, but you can also use it to improve the readability of the page. COLUMN READER: If you read extremely long wikipedia articles, you will like Column Reader. For simple one or two pages long articles you should use either TRANQUILITY or READABLE..... Column Reader, Tranquility and Readable all take a longer time than the other addons to remove the clutter from a webpage. Column Reader takes the longest time, but improves readability the most from among Column Reader, Readable and Tranquility - this is why its time consuming transformation is worth it only on longer pages and research articles. 7. NO SQUINT: Allows you to zoom in/out of a page. What is special about it is that you can zoom the page separately and zoom the font size of the text separately and Save the settings!. So you can enlarge the text more than you enlarge the images if you so desire. The ability to save website specific settings is unique to No Squint from among the 7 addons I have described. [My preference: Use Blank your Monitor for small pages and Column Reader for longer pages like Research papers etc.. Blank your monitor is sufficient for most purposes once you have customised a webpage using No Squint and saved the settings] “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=17 Category:
Column Reader	[ visit page] Web reader for wide screens and long documents. Read with pleasure in one of many attractive layouts. NEW: Integrated image viewer with pan and zoom + Choice of replacement font. For Firefox 24.0 and newer. Review notes: Text improvement Category:
Config Descriptions	[ visit page]
Console²	[ visit page] Console² (pronounced Console Squared or Console Two) replaces the JavaScript Console with what could be the next generation Error Console. From v0.5 includes the Console Filter extension previously available separately from the Console² website.
Copy All Links	[ visit page]
Copy Extensions to Clipboard	[ visit page]
Copy HTML	[ visit page]
Copy Plain Text 2	[ visit page] Copies text without formatting Review notes: “You can use Copy plain text alone or with another addon which enhances its function even more. Copy Plain Text 2 integrates with another addon "Autocopy 2". Autocopy 2 enables you to autocopy text as soon as you highlight it without pressing Ctrl+C. If you use Copy plain text 2 with Autocopy 2 then you can autocopy everything as plain text if you wish. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Copy Urls Expert	[ visit page] 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.
CopyAllURLs	[ visit page]
Cryptocat	[ visit page] Cryptocat lets you instantly set up encrypted conversations. It's an open source, private, safer chatting alternative. Cryptocat uses the OTR encrypted messaging protocol to offer accessible communications to everyone.
Ctrl-Tab	[ visit page]
Custom Buttons	[ visit page] Gives a possibility to create custom toolbarbuttons...
Custom Tab Width	[ visit page] Lets you customize the minimum and maximum tab width.
Cycle Input Focus	[ visit page]
Dafizilla Table2Clipboard	[ visit page] Review notes: Especially useful: “Table2Clipboard - Select column” Category:
DblClicker	[ visit page] Double-click action for Firefox - double-click Link, Bookmark/History to open in new tab (emulate ctrl+click).
Default FullZoom Level	[ visit page] Set Default FullZoom Level, Toolbar buttons for Page zoom and Text zoom. Review notes: Disability Category:
Deletebutton	[ visit page]
deskCut	[ visit page]
Destroy the Web	[ visit page] Turn any webpage into a shoot-em up video game. With a pulse pounding soundtrack and high scores for every web page, Destroy the Web is a fun way to take a little break during the day. Review notes: Games Category:
diaspora* Advanced Sharer	[ visit page] A button to share on diaspora* via diaspora* Advanced Sharer ( http://sharetodiaspora.github.com/about/ ).
diaspora* Easyshare	[ visit page] Easily share web content on your Diaspora* pod.
Disable Add-on Compatibility Checks	[ visit page] Reinstates the extensions.checkCompatibility preference without respect to the current application version. Review notes: Use at own risk. Useful for developers. Category:
Disable Anti-Adblock	[ visit page] Disables anti-adblocker scripts
Disable clipboard manipulations	[ visit page]
Disable Plugin & Mimetype Enumeration	addon compatibility helper jetpack package manager reporter restartless visit page] Prevent sites from grabbing a list of your plugins & mime types.
Disable Visited Links	[ visit page] This plugin cleanly disables visited link styles.
Disable WebRTC	[ visit page] WebRTC exposes your internal network IP(s), without user interaction.
Disconnect	[ visit page] Make the web faster, more private, and more secure.
Document Font Toggle	[ visit page]
Download Manager (S3)	[ visit page] This is a new life in Firefox 26+ for old well-known addon Download Statusbar
Download Scheduler	[ visit page]
Download Status Bar	[ visit page] 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.
Downloads Context Menu	[ visit page]
Drag & DropZones	[ visit page] Review notes: “An addon that you really don't need if you use the other search related addons in this list. But it certainly is a new way of searching and can be used to impress your girlfriend. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=16 Category:
drag to scroll (reloaded)	[ visit page]
Drag-n-Drop Multiple Files	[ visit page]
Draggable Star	[ visit page]
Drupal For Firebug	[ visit page] Drupal for Firebug extends the Firebug module to provide Drupal debugging and status messages. Review notes: App Category:
easyScroll	[ visit page]
Ecology	[ visit page] New version optimized for the new Australis interface. An all green theme "Ecology". It is composed of large icons for easy navigation.
Edit Bookmark Plus	[ visit page]
Element Hiding Helper for Adblock Plus	[ visit page] Fight the text ads! Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier. Review notes: This add-on requires the following add-ons to work properly: Adblock Plus, Adblock, Adblock Edge, or SpyBlock Category:
Element Properties	[ visit page] Returns the 'Properties' menu item that was removed in Firefox 3.6 to the context menu.
Enable Click to Play	[ visit page]
Encrypted Communication	[ visit page]
ErrorZilla Plus	[ visit page] Review notes: “There are two addons that let you open a cached version of a webpage(i.e. a snapshot of a webpage, that now doesn't exist or would not open, taken in the past) - ErrorZilla Plus and Resurrect pages. Both use 5-6 services like Google cache, Wayback machine etc. to show you cached pages. Both do so by adding links to the error page that shows up when you fail to connect to a webpage. The advantage of "Resurrect pages" is that it opens the cached page for each of the 5-6 services in a separate tab, thus allowing you to try all services quickly. The advantage of "ErrorZilla Plus" is that it also adds a Proxy button for you to open the webpage using a proxy service in case the website is inaccessible at your location/your country. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=25 Category:
Expire history by days	[ visit page] Review notes: “Prevents firefox from slowing over a period of a few months when the History gets bloated. I have kept the default setting of 9 days to delete history. It has a dramatic positive effect on the long term stability of firefox. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=20 Category:
ExportHTMLFolder	[ visit page]
Extended Statusbar	[ visit page] A Statusbar with speed, percentage, time and loaded size (similar to Opera's one)
Extension Auto-Installer	[ visit page] Extension Auto-Installer is a helper for Firefox/SeaMonkey/Thunderbird extension developers: it allows automatically adding or updating browser extensions, e.g. via command line tools. This makes testing your changes easier.
Extension Options Menu	[ visit page] Adds extension options dialogs to the Tools or Titlebar menu and includes toolbar icon.
external IP	[ visit page] This extension display your current external IP address in the browsers statusbar. Review notes: Also seen with the WorldIP add-on Category:
EZ Drag-n-Drop	[ visit page]
Fasterfox Lite	[ visit page] Fasterfox Lite: Performance and network tweaks for Firefox, without the Enhanced Prefetching. This is a fork from the original "Fasterfox".
Fastest Weather Forecast	[ visit page] Fastest Weather Forecast is the easiest way to check the weather while you browse internet Review notes: International weather forecast, not just the US. Category:
FavIcon Reloader	[ visit page] FavIconReloader reloads Favourite Icons by retrieving information from all bookmarked web sites.
FEBE	[ visit page] 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.
FF Rocker	[ visit page]
Fierr	[ visit page] Replaces the error page with a more stylish appearance with additional features.
File and Folder Shortcuts	[ visit page]
Find In Numbers	[ visit page]
FindBar Tweak	[ visit page] Anything between simple tweaks such as placing the findbar in the top corner, to the powerful "Find in All Tabs" tool, FindBar Tweak will make your find toolbar "just right"!
Fire Commander	[ visit page]
Firebug	[ visit page] Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page... Review notes: Firecookie is part of Firebug since Firebug 1.10 Category:
Firebug Autocompleter	[ visit page] Firebug command line autocomplete.
Fireclam	[ visit page] Use ClamAV to scan Firefox downloads for viruses. Review notes: Windows Category:
Firediff	[ visit page] Track Changes in Firebug
FireFontFamily	[ visit page] Highlight the rendered font-family in Firebug
FireGestures	[ visit page] A customizable mouse gestures extension which enables to execute various commands and user scripts with six types of gestures. Review notes: “This is a better, more stable, faster Gesture navigation addon than the more famous competitor All-in-One Gestures. But, do not install this addon if you have more than 30 addons. It slows down firefox a slight bit. For a guy like me with 150+ enabled addons, that slight bit of slowing is not acceptable.” - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Firemacs	[ visit page] Emacs editing/viewing keybind
FirePHP	[ visit page] FirePHP enables you to log to your Firebug Console using a simple PHP method call. Not using Firebug 1.9+ on Firefox 8+? See http://firephp.org/
Firepicker	[ visit page] Simple color picker plugin for Firebug.
FireQuery	[ visit page] Firebug plugin for jQuery development
FireRainbow	[ visit page] Javascript syntax highlighting for Firebug
FireSSH	[ visit page] FireSSH is a free, cross-platform SSH terminal client for Mozilla Firefox. Written entirely in Javascript!
Flashblock	[ visit page] Review notes: “The best flashblocking addon from among all of them. This is one of the few flashblockers that save bandwidth by preventing flash content from loading on a page before it is rendered. There are other flashblockers that let flash load, and then block it, which hardly saves any bandwidth. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
FlashFirebug	[ visit page] Debug Flash/SWF files on the web. Edit properties and inspect elements on the fly. View log output inside the extension. Run AS3 code against the active SWF. Access assets with the Explorer. View AMF calls and Shared Objects and much much more...
FlashGot Mass Downloader	[ visit page] 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.
Flem	[ visit page] Review notes: Best slideshow tool Category:
Focus Follows Mouse	[ visit page]
Font Finder	[ visit page] 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.
For Human Eyes Only	[ visit page]
Force Content-Type	[ visit page]
Form History Control	[ visit page] Manage form history entries (search, edit, cleanup, export/import) and easy text formfiller. Auto-save text entered in any form while typing to allow fast recovery when disaster strikes. Control for which webpage form history is saved or not.
FoxBleed	[ visit page] Checks the websites you are visiting whether they are affected by the Heartbleed vulnerability.
FoxClocks	[ visit page] 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.
FoxVox	[ visit page] Review notes: “FoxVox can also create audiobooks in mp3, ogg, and wav formats.” Category:
FoxyProxy Standard	[ visit page] FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.
Free Memory	[ visit page] An add-on to perform free-memory operations without visiting about:memory.
Free Proxy List	[ visit page] Is a easy way to use proxies in firefox from Proxy List site. You will have just to click a button to setup the proxy in your browser. ProxyList.ro tool for changing proxies.
FromWhereToWhere	[ visit page] Review notes: “A useful addon for those who search for a lot of stuff. But if you're not careful, this addon bloats up Firefox and slows it over a period of a few months. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=36 Category:
FxKeyboard	[ visit page] A virtual keyboard for Firefox. Adds a keyboard to the bottom of the window. Usefull for touchscreens or kiosks setups.
Gish It!	[ visit page] Create a GishPuppy Disposable Email Address via right-click or Tools... Review notes: “Gish It! also provides a bookmarklet on its website. Gish It is the best temporary email service out there. Also see another addon called Bloody Vikings; it gives you 10 temporary email services to choose from; but it doesn't include GishIt, which is the best of them all. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=40 Category:
GNotifier	[ visit page] Add-on for Firefox and Thunderbird. Integrates Firefox's notifications with the OS's native notification system. It supports most Linux desktops and Windows 8.
GNU LibreJS	[ visit page] GNU LibreJS aims to address the JavaScript problem described in Richard Stallman's article The JavaScript Trap. It is a free add-on for Mozilla browsers. It blocks nonfree nontrivial JavaScript while allowing JavaScript that is free and/or trivial.
[[Go-Mobile [Speed Boost]]]	[ visit page] Property "Has collection item" (as page type) with input value "Go-Mobile [Speed Boost" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
GotoImageUrl	[ visit page] Review notes: “"GotoImageUrl" - On clicking on a Google image search result, it takes you straight to the webpage hosting the image. "ttfc-google image search modifier" - On clicking on a Google image search result, it takes you to the full sized image straightaway. "Google Image Help" - Lets you open all full sized google images from any single search results numbered page in a single tab, arranged from top to bottom on the same single page. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=47 Category:
Greasemonkey	[ visit page] (compatible version: https://addons.mozilla.org/firefox/downloads/file/282084/greasemonkey-2.3-fx.xpi Customize the way a web page displays or behaves, by using small bits of JavaScript. Review notes: User Scripts are licensed separately by their authors so you should check them separately in order to verify if they are free software. Category:
Group/Sort Tabs	[ visit page]
HackBar	[ visit page] Simple security audit / Penetration test tool.
HackSearch	[ visit page]
Hide BookmarksBar	[ visit page]
Hide Caption Titlebar Plus	[ visit page] "Maximize your screen space by controlling the presence of Firefox window Title-bar (Caption) & borders!", to be like Chrome Browser. - Hide FF's caption with 'smart' options, *optional* custom caption & resizers. - Works with ChromiFox-like themes.
Hide Find Bar	[ visit page] Hide the Find Bar after a certain interval of inactivity has elapsed.
Hide Tab Bar With One Tab	[ visit page] Hide the tab bar if there is only one tab.
Hide Tabbar	[ visit page]
HideScrollbars	[ visit page] "Hide Scrollbars" add-on removes scrollbars for those who prefer mouse wheel and keyboard navigation. Review notes: Minimalist Category:
History Submenus II	[ visit page]
HTML Desktop Notifications	[ visit page]
Html Validator	[ visit page] HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla. The number of errors of a HTML page is seen on the form of an icon
HTML5 Video Everywhere!	[ visit page] Replace video player with Firefox native video player. Review notes: 31.4.0 IceCat users: Primary choice: Upgrade to IceCat 31.5.0. Second choice: Install this add-on to upgrade from HTML5 Video Everywhere! 0.1.1. Category:
HTTP Nowhere	[ visit page] Block unencrypted web traffic for added security.
HttpFox	[ visit page] An HTTP analyzer addon for Firefox
HTTPS Everywhere	[ visit page] 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.
Image Resizer/Scaler	[ visit page] Simply resize/scale any images on the web by dragging an image!
Image Search Options	[ visit page] Image Search Options provides a set of highly customizable reverse image search context menu options.
Image Zoom	[ visit page] Adds zoom and rotation functionality for images...
ImgLikeOpera	[ visit page] ImgLikeOpera allows load only the images that you want in Firefox browser. This extension is very useful for non broadband users... Review notes: Slow connection Category:
InFormEnter	[ visit page] InFormEnter adds a small, clickable icon next to every input field in a web form, from where you can select the item to be inserted - no typing required.
Inline Code Finder for Firebug	[ visit page] Inline Code Finder is an add-on to Firebug, to be able to find HTML elements with any of the below issues: Inline JavaScript events, inline style, javascript: links
InlineDisposition	[ visit page] Review notes: “At last, no need to confirm "open with..."!” Category:
InstantFox Quick Search	[ visit page] (compatible version: https://addons.mozilla.org/firefox/downloads/file/260032/instantfox_quick_search-2.8.9-fx.xpi?src=version-history
ipFlood	[ visit page] Simulate the use of a series of proxy changing at each new connection.
IpProtocols	[ visit page]
It's All Text!	[ visit page] Edit textareas using an external editor, because it's all text!
Jamendo Album Downloader	[ visit page] Download albums in Ogg Vorbis and MP3 format from www.jamendo.com
JavaScript Debugger	[ visit page] 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.
jQuery	[ visit page] jQuery and jQuery UI embedded in browser
JSONView	[ visit page] View JSON documents in the browser.
Just Disable Stuff	[ visit page] Just disable JavaScript - toggle it on and off. No fancy toolbars, icons, windows, unnecessary functions. Just do it. You can also disable images. And CSS. And multimedia.
KeeFox	[ visit page] 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.
Keylogger Beater	[ visit page]
Keyword Search	[ visit page] Search in the awesome bar without changing your search engine.
KillSpinners	[ visit page]
Kitsune	[ visit page] Kitsune is a Firefox extension which enables users to input Japanese in Firefox without external Japanse IME.
LanguageToolFx	[ visit page]
Launch Clipboard	[ visit page] Review notes: “Very useful when used with "Send Tab URLs". SendTabURLs copies the URL and name of all your currently open tabs to the clipboard/a text file/email client. You may anytime copy those links from that text file or email you sent yourself, and use Launch Clipboard to open them all in new tabs. ” - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
LavaFox V2	[ visit page] LavaFox - A dark and hot theme for Firefox. Fully skinned and animated.
LavaFox V2-Blue	[ visit page] LavaFox - Blue version.A dark and hot theme for Firefox. Fully skinned and animated.
LavaFox V2-Green	[ visit page] LavaFox - Green version.A dark and hot theme for Firefox. Fully skinned and animated.
LavaFox V2-Purple	[ visit page] LavaFox - Purple version.A dark and hot theme for Firefox. Fully skinned and animated.
LeechBlock	[ visit page] 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. Review notes: “The best addon to block websites that distract you. Lets you set up groups of websites. You can then block either single websites or the whole groupsYou can block websites/groups by time of the day as well. Very feature rich and stable.” - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Leet Key	[ visit page] Transforms typed or static text to L337, ROT13, BASE64, HEX, URL, BIN, DES, AES, Morse code, DVORAK keyboard layout and to lower/to upper case functionality, Leet Font...
Lightbeam	[ visit page] Lightbeam is a Firefox add-on that enables you to see the first and third party sites you interact with on the Web. Using interactive visualizations, Lightbeam shows you the relationships between these third parties and the sites you visit.
Link Alert	[ visit page]
Link Password	[ visit page]
Link Properties Plus	[ visit page]
LinkWalker	[ visit page]
Linky	[ visit page]
list-it	[ visit page]
Littlefox for Firefox	[ visit page] LittleFox, designed for optimal screen usage, leaving lots of room for browsing. Includes support for many extensions.
Live HTTP Headers	[ visit page] View HTTP headers of a page and while browsing.
LiveClick	[ visit page] Adds feed reading, notifications, favicons, and other enhancements to Live Bookmarks.
lmnpop	[ visit page]
Load Tabs Progressively	[ visit page]
Locale Switcher	[ visit page] Displays a menu item for switching the application locale.
Location Bar Enhancer	[ visit page] Changes the Location Bar of Firefox into a Breadcrumb display with rich and interactive features. Review notes: Puts emphasis on the domain to reduce spoofing risk. Also, “ I generally do not go for addons that serve the sole purpose of improving Firefox's looks. But this addon is clearly an exception. Improves the Location bar's looks by a factor of 100000000 times. Oh, and it does add a few small but handy-to-have functions, although you'd could probably rarely use them. I'd suggest that you give it a try. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Lock The Text	[ visit page]
Lucifox	[ visit page] Read EPUB e-books and browse OPDS catalogs. Review notes: “Read ePub Books using firefox. Also see the addons "Save as ePub" and "GrabMyBooks" both of which convert webpages to ePub. GrabMyBooks is the more fully featured of the two but Save as ePub is simpler. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Magic Open Download Folder Button	[ visit page]
Mailvelope	[ visit page] Enhance your webmail provider with end-to-end encryption. Secure email communication based on the OpenPGP standard.
Master Password Timeout	[ visit page]
Master Password+	[ visit page] 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. Review notes: “Locks your Firefox windows with an opaque password protected screen if you have been away for x number of minutes. There is no way to circumvent it if you adjust the settings properly. Be careful to remember your password.” - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
MediaPlayerConnectivity	[ visit page] Allow you to launch embed video of website in an external application with a simple click.
Memory Restart	[ visit page] Review notes: “There is also an auto restart feature” Category:
Menu Wizard	[ visit page] Customize menus : Helps removing, moving and renaming menus and menu items. Colorize important menu for ease of use! (use Style (CSS)). Change or disable any of used keyboard shortcuts. Support: Firefox, Thunderbird and SeaMonkey
MicroFox for Firefox	[ visit page] MicroFox is LittleFox, but with retro/micro 8bit graphics. Smallest theme there is for all.
MinimizeToTray revived	[ visit page] Minimizes windows into the system tray. Review notes: “Note Minimises Firefox to tray instead of closing it. But I prefer another addon called "Tray Hotkey" which also allows you to set the transparency of a firefox window; A function that you can use to view youtube videos in another browser as you use a transparent FF window on top of it.” - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
MinUI	[ visit page]
MM3 Proxy Switch	[ visit page] In the Firefox Browser (and other Mozilla programs) you can per default configure only the setting for one internet connection. With this Proxy Switch you can manage different configurations and simply switch over between these.
ModestTab	[ visit page]
Modify Headers	[ visit page] Add, modify and filter the HTTP request headers sent to web servers. This addon is particularly useful for Mobile web development, HTTP testing and privacy.
More In Content UI +	[ visit page]
Morning Coffee	[ visit page] Keeps track of daily routine websites and opens them in tabs...
Most Recent Tab	[ visit page]
MouseControl	[ visit page]
Mouseless Browsing	[ visit page] Mouseless Browsing (MLB) enables you to browse the web entirely with the keyboard. The basic principle is to add small boxes with unique ids behind every link and/or form element. You just have to type in the id to trigger the corresponding action i.e. following a link, pressing a button or selecting a textfield...
Move Tabs	[ visit page]
Mozilla Archive Format, with MHT and Faithful Save	[ visit page] 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!
Mozilla Labs: Prospector - Instant Preview	[ visit page] Start loading pages as you select them from the location bar suggestions
Multiple Addon Deactivator	[ visit page] Multiple Addon Deactivator (M.A.D) is an addon that can (de)activate one, many or each addon at the same time.
Multiple Tab Handler	[ visit page] Review notes: “An indispensable addon for people who work with a lot of tabs.. Select tabs using Ctrl and/or Shift + click and Close/Pin/Protect/Bookmark/Duplicate/Reload those selected tabs. Perfect! Particularly useful when used with Tab Mix Plus and Tab Groups manager. ” - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Muter	[ visit page]
My Weekly Browsing Schedule	[ visit page]
MySlashKey	[ visit page]
MyWords	[ visit page]
Nautipolis for Firefox	[ visit page] Nautipolis for Firefox: a blend of retro, nautical, Areo and Gnome. Designed for daily use, with consistent layout, buttons, widgets, with support for many extensions.
New newtab tab	[ visit page]
New Plugin Disabler	[ visit page] Deactivates all plugins on startup.
New Tab from Location Bar	[ visit page] Opens new tabs from the location bar, by conditions.
New Tab Pro	[ visit page]
New Tab Tools	[ visit page] (compatible version: https://addons.mozilla.org/firefox/downloads/file/272026/new_tab_tools-30-fx.xpi?src=version-history
NewsFox	[ visit page] NewsFox is an efficient 3-pane(email) style Atom/RSS feed reader.
NewTab Background Shuffler	[ visit page]
Newtab Ninja	[ visit page]
NewTabURL	[ visit page] Select the default URL when new tabs are opened. The options are: "A blank page", "The home page", "The current page" or a user defined URL. When there is an URL in the clipboard, it is also possible to open automatically that URL in the new tab.
NextPlease	[ visit page]
No Flash	[ visit page] 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."
NoiaScrollbars	[ visit page] The "NewScrollbars"-extension replaces the default scrollbars of Firefox and Thunderbird with colorized ones (partly) known from "Noia themes".
Noise	[ visit page]
NoScript Security Suite	[ visit page] Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks. Review notes: µBlock or Adblock Plus based add-ons provides great power & flexibility in controlling cross-site requests, but requires writing rules. NoScript that blocks all scripts (or RequestPolicy for cross-site requests) provides an interface that is quick & easy to use, and perhaps most importantly, gives feedback about which requests are being blocked/allowed on each page, but without the fine-grained permissions that the other mentioned add-ons allows. Category:
NoSquint	[ visit page] NoSquint allows you to adjust the text-only and full-page (both text and images) zoom levels as well as color settings both globally (for all sites) and per site.
Notepad (QuickFox)	[ visit page] Review notes: “ The best text-only note taking utility for Firefox. It keeps your notes saved among your bookmarks in a folder of its own. So, whenever you sync/save or transfer your bookmarks, your notes too are synced/saved/transferred. Therefore, you can share your notes with other people simply by sharing your bookmarks with them. The only other text-only note taking addon that compares with QuickFox Notes is QUICK NOTE. The one major difference is that Quick Note saves your notes locally, in a folder on your own computer. If you do not care where your notes are stored - QuickFox Notes is certainly the better option. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Nuvola FF	[ visit page] Theme based on the Nuvola icon set by David Vignoni (http://icon-king.com/?p=15).
Omnibar	[ visit page] Integrates location bar and search bar into one. Shows search and url suggestions. Quickly switch search engine using search keywords. Provides different auto-complete popup styles for compact displays.
Omnibar Plus	[ visit page]
OmniSidebar	[ visit page] (compatible version: https://addons.mozilla.org/firefox/downloads/file/259382/omnisidebar-1.4.7-fx.xpi?src=version-history
Online Convert	[ visit page]
Open in Browser	[ visit page] Offers the possibility to display documents in browser window.
Open in Private Browsing Mode	[ visit page] Right-click on a link to instantly open it in Private Browsing mode. (Or right-click anywhere to quickly open private browsing mode.) Review notes: Already integrated in FF ESR Category:
Open Profile Folder	[ visit page]
OpenDownload²	[ visit page] OpenDownload² extends the "Save" dialog by a "Run" button to open the file directly.
OPIE (Ordered Preference Import/Export)	[ visit page]
OPML Support	[ visit page]
OverbiteFF	[ visit page] Add legacy protocol support back to Firefox and SeaMonkey with OverbiteFF, which restores support for Gopher servers, plus CSO/ph searches, finger, whois and more! Cross-platform JavaScript runs anywhere Firefox does.
Paragrasp	[ visit page]
Password Exporter	[ visit page] This extension allows you to export your saved passwords and disabled login hosts using XML or CSV files that can be imported later.
Pentadactyl	[ visit page] Vim-inspired, keyboard-accessible user interface for Iceweasel/Firefox
Personal Menu (Personal Firefox Button)	[ visit page] Bring back your personal and powerful Firefox Button!
Personas Shuffler	[ visit page]
Places Maintenance	[ visit page]
Places' Tooltips	[ visit page]
Plain Text Links	[ visit page] With any text that can be treated as a URL, using this extension you can right click on the text and select "Open this URL".
Prevent Tab Overflow	[ visit page] Make sure your tabs stay visible all the time.
Print Edit	[ visit page] Allows editing of web page content while in Print Preview mode, prior to printing or saving as HTML or PDF. Compacts the layout and removes unwanted content such as adverts, sidebars and blank pages. Any element can be formatted, hidden or deleted.
Print selected text	[ visit page]
Privacy Badger	[ visit page] Protects your privacy by blocking spying ads and invisible trackers. Warning: This add-on is in alpha, so you may find some bugs! Read more: https://www.eff.org/privacybadger Review notes: “This add-on is in alpha, so you may find some bugs!” Category:
Private Tab	[ visit page] Adds private tabs.
ProfileSwitcher	[ visit page] Review notes: “Better than Switchy, which is another addon to switch between firefox profiles. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Progre	[ visit page]
Prostetnic highlighter	[ visit page]
ProxTube - Unblock YouTube	[ visit page] In some countries YouTube videos are blocked! Unblock them with this Addon.
Public Fox	[ visit page] Block downloads, lock down bookmarks/addons/downloads with a password. Review notes: “Password protect your Addon settings, Downloads, Bookmarks, History, Firefox Options, Toolbar customisation. An excellent tool if you 1. Run an Internet kiosk 2. Are a parent who wants to prevent a child from removing the anti-porn addons that you have installed 3. Are a porn downloader who wants to keep your activities private. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Pure URL	[ visit page] Removes garbage like "utm_source" from URLs
Quick Translator	[ visit page] The most lightweight and easiest translator. Translate between more than 80 languages with one click or a hot key. Translate from one word to a whole page.
QuickJava	[ visit page] (compatible version: https://addons.mozilla.org/firefox/downloads/file/241288/quickjava-2.0.4-fx.xpi Review notes: “ I think this is much better than things like NoScripts. Much less cluttered, much less time wasting and much more simpler to use. The only negative - it takes space of 5 buttons on the addon bar(although the buttons are beautiful, I must say). If you want only one button to toggle all plugins, use the Pluggin toggler.” - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
QuickNote	[ visit page] A simple note-taking extension. Review notes: “ Stores your notes locally on your computer. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
QuickPasswords	[ visit page]
QuickToolbars	[ visit page] Review notes: “ Set just one button to hide/unhide any number of toolbars you chose in the settings(including the ones created by other addons). “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=36 Category:
QuoteURLText	[ visit page]
Rainbow Color Tools	[ visit page] Color tools for web development. Color picker and eyedropper + saving colors and trying out colors with drag and drop.
Random Agent Spoofer	[ visit page] Rotates complete browser profiles (from real browsers / devices) at a user defined time interval. It includes many extra privacy enhancing options
Ratings Preview for YouTube	[ visit page]
Re-Pagination	[ visit page]
Reader	[ visit page] Reader is the ultimate Reader tool for Firefox. Review notes: Text improvement Category:
RECAP	[ visit page] Improves PACER, the electronic public access system for the U.S. Federal District and Bankruptcy Courts.
Red Cats (blue flavor)	[ visit page] There can never be too many cats! Turn your Firefox into Firecat and enjoy browsing in the furry company. The theme also comes in green flavor. Beta version for Firefox 32.x -38.x is currently available at the support forum and the home page.
Red Cats (green flavor)	[ visit page] There can never be too many cats! Turn your Firefox into Firecat and enjoy browsing in the furry company. The theme also comes in green flavor. Beta version for Firefox 32.x -38.x is currently available at the support forum and the home page.
Redirect Remover	[ visit page] Removes Redirects like http://redirectremover.mozdev.org/?www.mozilla.org from Links and Images
RefControl	[ visit page] Control what gets sent as the HTTP Referer on a per-site basis. Review notes: Privacy and security Category:
Reload Plus	[ visit page] Reinstates the extensions.checkCompatibility preference without respect to the current application version.
ReloadEvery	[ visit page] 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)
RememberPass	[ visit page]
ReminderFox	[ visit page] 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 notes: Popups are seen outside the Firefox window which is great as you get reminded no matter in which software you work. Category:
RequestPolicy	[ visit page] Be in control of which cross-site requests are allowed. Improve the privacy of your browsing by not letting other sites know your browsing habits. Secure yourself from Cross-Site Request Forgery (CSRF) and other attacks. Review notes: Is RequestPolicy an alternative or competitor to NoScript? No! :) NoScript is a tool that gives you a default deny policy for JavaScript, Java, Flash and other plugins. NoScript allows you to whitelist scripts and objects from domains you trust. RequestPolicy is a tool that gives you a default deny policy for cross-site requests. RequestPolicy allows you to whitelist cross-site requests you trust. - https://requestpolicycontinued.github.io/#faq-noscript Category:
RequestPolicy Sync	[ visit page] Sync engine for RequestPolicy.
ResetSearchbar	[ visit page]
Restartless Restart	[ visit page] This 15KB restartless add-on will add a "File" -> "Restart" menu item and a ctrl/cmd + alt + r hotkey to restart Firefox or Seamonkey.
Resurrect Pages	[ visit page] Dead pages, broken links, the scourge of the internet. Powerhouse sites like Slashdot and Digg can bring a server to its knees. What do we do when a page is dead but we still want to see it? Call in the clerics, and perform a resurrection...
Right Links	[ visit page] Review notes: “Right click links to open them in new tabs. Also, Provides a button to toggle this function on and off. So you can switch it off when you want to use right click for other purposes(like when you want to copy text). Quite handy at times.” - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Right-Click-Link	[ visit page] Opens selected text in a new tab.
RSS Feed Icon in Navbar	[ visit page] Add an RSS feed icon to the navbar.
RSS Ticker	[ visit page] RSS Ticker loads your Live Bookmarks and scrolls their entries across your screen while you surf.
Sage	[ visit page] Review notes: “News Fox is better and more fully featured. NewsFox is almost similar to most standalone desktop RSS Feed readers. Use Sage only if you want less functionality and a light, simple interface. Sage will naturally, consume less RAM than NewsFox(the difference is not huge though). “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=15 Category:
Save File to	[ visit page]
Save Image in Folder	[ visit page] Easily save images in personally customized...
Save Images	[ visit page]
Save Link in Folder	[ visit page]
Save Text To File	[ visit page] (compatible version: https://addons.mozilla.org/firefox/downloads/file/287304/save_file_to-2.5.3-fx.xpi?src=version-history Review notes: “Also see the addon "stf" (STF stands for Save Text to File too) “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Save-To-Read	[ visit page] Review notes: “ I keep both Pocket(also called Read-It-Later in the past) and Save-To-Read. In Pocket, I store my best articles and hub pages(which contain a collection of links to follow) - the kind of stuff I want to keep forever. In Save-to-Read, I store links that I only need to visit once. The difference between Save-to-Read and Pocket is that - 1.Save-to-read save your links on locally your on computer and Pocket save your link online, in your Pocket website account 2.Save-to-Read can shows your links in the sidebar or in a pop-up,; Pocket shows your links in a Pop-up. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=16 Category:
Saved Password Editor	[ visit page] Adds the ability to create and edit entries in the password manager.
Saved Passwords Button	[ visit page]
SavedSearchButton	[ visit page]
SaveLink	[ visit page]
Scientific Calculator Toolbar	[ visit page] A full-featured scientific calculator which can be placed in any Firefox tool-bar or the Australis PanelUI.
ScrapBook	[ visit page] Helps you to save Web pages and organize the collection.
ScrapBook Plus 2	[ visit page] Attention! Alpha version! Do not use as a replacement for ScrapBook Plus 1! Review notes: Alpha version. Category:
Screengrab (fix version)	[ visit page] Screengrab! saves webpages as images.
Scribblies Brite	[ visit page] A brightly colored theme with fun icons. The juggler juggles his balls while pages load.
Scribblies Plain	[ visit page] A fun theme with a plain background. Be sure to watch the juggler juggling his balls while pages load.
ScribeFire Next	[ visit page]
Scriptish	[ visit page] The greatest user script engine on the Internet (a fork of Greasemonkey). Review notes: User Scripts are licensed separately by their authors so you should check them separately in order to verify if they are free software. Category:
Scroll Progress	[ visit page] When scrolling vertically, shows a percentage indicator displaying how far down has been scrolled on the page.
Scroll Search Engines	[ visit page]
Scroll To Top	[ visit page] A plugin to scroll to top and vice versa of a window. It is really beautiful and is highly customizable..
Scroll Up Folder	[ visit page]
Search on Engine Change	[ visit page] Automatically searches for the text in the search box when another search engine is selected.
Search Site	[ visit page] Review notes: “ Useful” - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=18 Category:
SearchLoad Options	[ visit page]
searchOnTab	[ visit page] This extension allows users to select where are loaded the results of the search bar...
SearchPreview	[ visit page] Review notes: “Also see the addon "Search GBY" which adds a few more functions. If search preview is all you're interested in, then chose this addon over Search GBY.” - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
SearchStatus	[ visit page] Display the Google PageRank, Alexa rank, Compete ranking and SEOmoz Linkscape mozRank anywhere in your browser, along with fast keyword density analyser, keyword/nofollow highlighting, backward/related links, canonical links, WHOIS, robots and more.
SearchThisSite	[ visit page]
Secure Login	[ visit page] Secure Login is an extension for Firefox integrated password manager.
Security Tab Colorizer	[ visit page] When installed this addon will colorize your tabs depending on the protocol they use (currently [http/https red/green respectively] only). So you would know if you are browsing through a secured connection even if you have hidden the navigation bar.
SelectBoxTools	[ visit page]
Selected Search	[ visit page] Review notes: “ Use this addon with 1. Add to Search Bar and 2. Organize search engines. For me, it has become absolutely indispensable. As soon as I highlight any text, this addon automatically pops up a tiny 40*40 pixel grid showing each of my 25 addons in a tiny box. I can then select the engine I want to search the selected text with. So, as soon as I see a movie whose name I haven't heard, I highlight its name and select IMDB to search IMDB.com for that movie. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=26 Category:
SelectionSK	[ visit page] Review notes: “ Functions similar to the older and therefore more popular Auto Context addon. But AutoContext is no longer being developed by the developer and will not work with Firefox 3.7 and above(unless you use the workarounds I have written in my xomments on Auto-Context). Selection SK has all the functions of Auto-Context and then some more. So it is a sufficient replacement for Auto-Context. To me Selection SK is an indispensable addon. However, I keep it switched off using its red/green button until I need it, because unlike Auto-Context, Selection SK is a big addon and slows down Firefox. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=28 Category:
Selenium IDE Button	[ visit page] Just one simple toolbar button to open Selenium IDE. You need to have installed Selenium IDE: http://seleniumhq.org/projects/ide/
Self-Destructing Cookies	[ visit page] 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.
Send Link in context menu	[ visit page]
Send Tab URLs	[ visit page] Review notes: “Copy the Names and URLs of all open tabs in a numbered or non-numbered list to either the clipboard, a text file or send them by email using GMail or your favourite email client. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=20 Category:
SenSEO	[ visit page] SenSEO is an extension checking the most important on-page-SEO-criteria and calculating a grade of how good your site fulfills these criteria.
Server Spy	[ visit page] Server Spy indicates what brand of HTTP server (e.g. Apache, IIS, etc.) runs on the visited sites.
Session Manager	[ visit page] 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 notes: “You can also use Tab Mix Plus's Session manager instead of this. But the advantages of Session manager are 1. More powerful, Stores more sessions 2. If you also have the addon "Session Manager Export tool" then you can export and save your sessions.” - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
ShareMeNot	[ visit page] Designed to prevent third-party buttons (such as the Facebook “Like” button or the Twitter “tweet” button) embedded by sites across the Internet from tracking you until you actually interact with them.
Show Anchors 2	[ visit page]
Show My Password	[ visit page] You are annoyed because your password fields are always scrambled though nobody else but you can see the screen? This most advanced unscrambling addon shows your passwords in readable letters, while being fully customizable to fit your needs.
Show Parent Folder	[ visit page]
Sidebar Auto Show/Hide	[ visit page] Review notes: Consumes way less CPU than All-in-One Sidebar (AiOS) Category:
Sidebar Bookmarks Search Plus	[ visit page] A tree of the bookmarks is displayed under search results of the sidebar bookmarks.
Sidebars List	[ visit page] Review notes: “I personally find it simpler and more convenient than Omnisidebar. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=25 Consumes less CPU Category:
Silent Block	[ visit page] Minimum and fast URL blocker by regular expression.
SimilarWeb - Website Traffic Sources and Ranking	[ visit page] Get in-depth traffic and engagement stats for any website with a single click. See how popular a website is, its traffic sources, average time on site, ranking info, top referring sites, paid keywords, related mobile apps, and much, much more.
Simple Clocks	[ visit page]
Simple Mail	[ visit page]
Simple Timer	[ visit page] A timer/clock residing in the toolbar.
Simplify Awesome Bar	[ visit page]
Smart Find	[ visit page]
Smart Referer	[ visit page] Send referers only when staying on the same domain. You can whitelist domains with wildcards and configure other things, look in the preferences page of the addon in the addon manager.
SmartPager	[ visit page]
SmileySidebar	[ visit page]
SmoothWheel	[ visit page] (compatible version: https://bug1054737.bugzilla.mozilla.org/attachment.cgi?id=8578376 Scrolls the page smoothly when scrolling the mouse wheel (or keyboard arrows if enabled). Review notes: Suggested add-on installation is a WIP to workaround a the scroll bug in HTML text fields. We need that fix to Edit our Wikis. Read https://bugzilla.mozilla.org/show_bug.cgi?id=1054737 for development. Read http://smoothwheel.mozdev.org/um_welcome.php for news release Category:
Sort Tabs Command	[ visit page]
Space Next	[ visit page] Review notes: “Useful. Also see "PageZipper", which I think is even more useful. You can also use SpaceNext + PageZipper together. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=20 Category:
Speed Dial	[ visit page] Direct access to your most visited websites
[[Speed Dial [FVD] - New Tab Page, Sync...]]	[ visit page] FVD Speed Dial - Speed dial button, Online Synchronization, New Tab Start Page, Organize bookmarks, Custom backgrounds, custom dials, organized groups, most visited dials. Property "Has collection item" (as page type) with input value "Speed Dial [FVD] - New Tab Page, Sync..." contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
SQL Inject Me	[ visit page] SQL Injection vulnerabilites can cause a lot of damage to a web application. A malicious user can possibly view records, delete records, drop tables or gain access to your server. SQL Inject-Me is Firefox Extension used to test for SQL Injection vuln...
SQLite Manager	[ visit page] Manage any SQLite database on your computer.
SSleuth	[ visit page] How strong is your HTTPS connection? SSleuth ranks an established SSL/TLS connection and gives a brief summary of the cipher suite, certificate and other SSL/TLS parameters.
Stay-Open Menu	[ visit page]
storeTab	[ visit page]
Stylish	[ visit page] Restyle the web with Stylish, a user styles manager. Stylish lets you easily install themes and skins for Google, Facebook, YouTube, Orkut, and many, many other sites. You can even customize Firefox and other programs themselves.
Stylish Tools	[ visit page]
stylishsync	[ visit page] Sync engine for Stylish with backup / restore facility.
Switch to Tab no more	[ visit page] Disables the Switch to Tab function. Review notes: Read http://www.technospot.net/blogs/how-to-disable-switch-to-tab-in-firefox/ Category:
Tab Auto Reload	[ visit page] "Maximize your screen space by controlling the presence of Firefox window Title-bar (Caption) & borders!", to be like Chrome Browser. - Hide FF's caption with 'smart' options, *optional* custom caption & resizers. - Works with ChromiFox-like themes.
Tab Data (+Memory usage)	[ visit page] Provides user with tab related stats and memory usage
Tab Flick	[ visit page]
Tab Focus	[ visit page] Review notes: Switch to tabs withouts mouse clicks- Category:
Tab History Menu (modified)	[ visit page]
Tab Mix Plus	[ visit page] 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. Review notes: “An absolutely indispensable addon. A few words of note : (A). You can also use Tab Mix Plus's Session manager instead of the separate addon 'Session Manager'. But the advantages of Session manager are 1. More powerful, Stores more sessions 2. If you also have the addon "Session Manager Export tool" then you can export and save your sessions. (B) Tab Mix Plus can be made even more powerful if you use it alongwith two more addons - Multiple Tab Handler and Tab Groups Manager. ............................... I am using Firefox 18 at the time of writing. And these days I prefer Tab Utilities over Tab Mix Plus because it allows me to stack Tabs like Opera. Tab Mix Plus so far does not have this function. Also I use the addon Tab Kit 2nd Edition which plays better with TU than with TMP. The advantages of Tab Mix Plus are that although it offers fewer functions than Tab utilities, those functions are solidly built and complete. Also most developers who make tab related addons ensure that their addons are compatible with Tab Mix Plus, so TMP works well with most other Tab related addons (except Tab Kit 2nd Edition which works with Tab Utilities better because both were developed by the same guy)” - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Tab Scope	[ visit page] Preview and navigate tab contents through popup. Review notes: “Consumes a good amount of RAM. Do not use if you have more than 70 addons or have less than 1GB RAM.” - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Tab Scope Tweaker	[ visit page]
Tab Utilities	[ visit page] Review notes: “I am using Firefox 18 at the time of writing. And these days I prefer Tab Utilities over Tab Mix Plus because it allows me to stack Tabs like Opera. Tab Mix Plus so far does not have this function. Also I use the addon Tab Kit 2nd Edition which plays better with TU than with TMP. The advantages of Tab Mix Plus are that although it offers fewer functions than Tab utilities, those functions are solidly built and complete. Also most developers who make tab related addons ensure that their addons are compatible with Tab Mix Plus, so TMP works well with most other Tab related addons (except Tab Kit 2nd Edition which works with Tab Utilities better because both were developed by the same guy) “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
TabClearSearch3	[ visit page]
TabCloser	[ visit page]
TabGroups Menu	[ visit page]
Tabhunter	[ visit page] Review notes: “ Can search for text in all open tabs. Other addons that can do this are "Fastest Fox" and "Find in Tabs". Fastest Fox does this most reliably, but is has many more features than the one described here, you may not need all those features, but it is restartless. Using the addon Togglify, you can enable it quickly when you need it. Find in Tabs is no longer developed, but among the comments section of the addon, you can find a patched version that can be downloaded from non-mozilla websites and works with newer versions of Firefox. I personally prefer Tab Hunter. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=35 Category:
Tabs Menu	[ visit page]
tabTooltip	[ visit page]
TagSpaces	[ visit page]
Tamper Data	[ visit page] Use tamperdata to view and modify HTTP/HTTPS headers and post parameters... Review notes: More popular than Modify Headers Category:
Terms of Service; Didn’t Read	[ visit page] “I have read and agree to the Terms” is the biggest lie on the web. We aim to fix that. Get informed instantly about websites' terms & privacy policies, with ratings and summaries from the tosdr.org initiative.
Text Link	[ visit page] Allows URI texts written in webpages to be loaded by double clicks.
Text to Voice	[ visit page] http://en.wikipedia.org/wiki/Text-to-voice. TTS gives Firefox the power of speech. Select text, click the button on the bottom right of Firefox window and this add-on speaks the selected text for you. Isn't it brilliant? Audio is downloadable.
Textarea Cache	[ visit page]
The Addon Bar (Restored)	[ visit page] Gives you a place to put all your add-on buttons without over-crowding the navigation bar.
Theme Font & Size Changer	[ visit page] 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.
Themes Menu	[ visit page]
Thumbnail Zoom Plus	[ visit page] Shows full image when you hover over a thumbnail. Works with Amazon, Baidu Images, Bing Images, Facebook, Flickr, Google+, Google Images, IMDb, LinkedIn, Netflix, Pinterest, Reddit, Twitter, Yandex, YouTube, Wikipedia, Yahoo Images, & many more.
TiddlyFox extension for Firefox	[ visit page]
Tile Tabs	[ visit page] Displays tabs in tiled layouts in Firefox. Arrange tiles horizontally, vertically or in a grid. Resize tiles by dragging splitter bars. Tabs and links can be dragged to open in other tiles. Supports multiple tiled layouts. Works with tab groups.
TinyURL Generator	[ visit page] An extension to silently generate a TinyURL for your current page at the click of a button. Also shows you where TinyURLs on the web will take you.
Toggle animated GIFs	[ visit page] Start/stop GIF animations through a keyboard shortcut or by clicking them. You can also restart animations from the beginning, or disable animations by default. Review notes: “ Note that 1. It toggles only 'animated' GIFs. (There are other addons out there, like "GIF Blocker" which blocks all GIFS whether animated or not.) 2. The hotkey to toggle animated GIFS using this addon is Control+M, which to me is inconvenient. But I circumvent this issue by using another addon called "Togglify", which allows me to toggle this addon itself, instead of using Ctrl+M. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Toggle Word Wrap	[ visit page]
Togglify Add-on Toggler	[ visit page] Review notes: “ A great great addon. I don't know why it isn't more famous. It is a must have for those who use like 200+ addons like do at a time. It provides you with one button for each restartless addon to toggle between enable/disable each restartless addon. Install Togglify, then go to menubar>view>toolbars>customise; presto, you can see the new buttons, now you can place them on any toolbar you want. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=44 Category:
Toolbar Autohide	[ visit page] (compatible version: https://addons.mozilla.org/firefox/downloads/file/306024/toolbar_autohide-6.7.0b1-fx.xpi Enables automatic hiding of toolbars (tabs, navigation, bookmarks and add-on bar) via context menu options. When hiding, toolbars will appear when the mouse is at the top of the window or when activated by keyboard (e.g. Ctrl-l, Ctrl-k, F10). Review notes: “The only addon at this time(FF22 is the latest version), that reliably can autohide the addons bar, and exist stably with my 233 active addons. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Toolbar Buttons	[ visit page] 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.
TooManyTabs - Saves Your Memory	[ visit page] Review notes: “The best addon to save pages to read later. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Tor Flashproxy Badge	[ visit page] Simple extension that makes Firefox a bridge for censored users in countries with oppressive regimes.
Torrent Status Tool	[ visit page] Torrent status in my browser and single-click torrent submission. Supports uTorrent, BitTorrent, qBittorrent, Deluge, KTorrent, Transmission, and Vuze/Azureus.
Tranquility	[ visit page] Makes a Web Page readable. Review notes: Text improvement Category:
TrayHotKey	[ visit page]
Tree Style Tab	[ visit page] Show tabs like a tree. Review notes: “Useful, Delightful! But I am unable to use it because then I am unable to use many other Tab related addons. Tab Kit 2nd edition gives me some of the functions of Tree style tabs and also plays well with Tab Utilities if the settings are set properly.” - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Turn Off the Lights	[ visit page] The entire page will be fading to dark, so you can watch the video as if you were in the cinema.
Turn Off the Lights Mini	[ visit page] Dims the brightness level of your browser’s background and lets you enjoy watching a video online. No fancy extras, just lightweight, perfect darkness!
TweakMDB - IMDB Video Downloader & More	[ visit page]
UAControl	[ visit page] Control what gets sent as the User-Agent on a per-site basis.
uggc protocol	[ visit page] ROT-13 http:// (uggc://) URLs should just work.
Undo Bookmarks Menu	[ visit page]
Undo Closed Tabs Button	[ visit page] This extension allows you to undo closed tabs via a toolbar button or the right-click context menu.
Undo Tab Operations	[ visit page]
Unicode Input Tool/Converter	[ visit page] Unicode lookup and chart view to find international characters or symbols; converts among HTML/XML entities, numeric character references (hex and dec), CSS/JavaScript/PHP6 escape sequences, and Unicode; allows saving of snippets to paste
uniqtabs (Unique Tabs)	[ visit page] Review notes: “A new addon. Therefore a bit buggy. But it has some unique functions. I have kept it in the list hoping that it would improve with time as the developer fixes it. “- https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=37 Category:
UnMHT	[ visit page] 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.
Unsorted Bookmarks Folder Menu	[ visit page]
Update Scanner	[ visit page] (compatible version: https://addons.mozilla.org/firefox/downloads/file/274736/update_scanner-3.1.16-fx.xpi Monitors web pages for updates. Useful for websites that don't provide Atom or RSS feeds. Review notes: “If you want to check a page for changes occurring over a period of days/weeks/months, use "Update Scanner". If you want to be alerted about changes that occur over seconds/minutes/hours, use "Check4Change". Following RSS Feeds, if a page makes them available is the best way to keep abreast of changes made to a webpage, but if a webpage does not make RSS feeds available, then using "Update Scanner" or "Check4Change" is the only way to check whether any changes have been made to the webpage. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
UploadProgress	[ visit page] Displays the progress of the current uploads. Useful for sites that does not shows the upload progress like youtube.
URL Fixer	[ visit page] URL Fixer fixes common typos in URLs entered in the address bar. It will fix errors like "google.con" or "youtube,com". You have the option of being asked to confirm corrections before they are applied. Review notes: “Incompatible with "ErrorZilla Plus" and "Resurrect Pages". I personally need the functions of Error Zilla Plus more than URL fixers'.” - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
URL Link	[ visit page] URL Link is a small Firefox and Thunderbird extension that allows you to select a non-URL in a mail/news message or web-page, and open it in a browser window.
URL Logger	[ visit page]
URL Tooltip	[ visit page]
URL Tooltip for Firefox 15+	[ visit page] Displays target URL in tooltips.
User Agent Switcher	[ visit page] The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.
User-Agent JS Fixer	[ visit page] Extends the functionality of other User-Agent addons, allowing them to modify the User-Agent for JavaScript code. Review notes: “This addon can change the JavaScript User-Agent on a per-site basis, rather than changing for the whole session. It does nothing by itself, but it complements the functionality of another addon like UAControl109 or ua-site-switch110.” Category:
Vertical Toolbar	[ visit page]
View Dependencies	[ visit page]
View Frames	[ visit page]
VimFx	[ visit page] VimFx introduces Vim-style keyboard shortcuts for browsing and navigation without using the mouse.
Vimperator	[ visit page] Make Firefox look and behave like Vim
Visual Hashing	[ visit page]
Walnut2 for Firefox	[ visit page] Walnut2, based on icons from art.gnome.org. Includes support for help, inspector, downloadstatusbar, downloadmgr, calendar, quicknote, offline, toolbarext. and many other extensions. Install "About Home Themer" to also theme the about:home page.
Wappalyzer	[ visit page] Wappalyzer is a browser extension that identifies software on websites.
WCAG Contrast checker	[ visit page] Checks for compliance with the contrast levels, brightness and shine in the color combination of foreground and background of textual content based on the requirements of WCAG 1 and WCAG 2.
Web Developer	[ visit page] The Web Developer extension adds various web developer tools to the browser.
Web of Trust - WOT	[ visit page] Find out which websites you can trust. WOT adds intuitive traffic light-style icons next to search results and URLs to help you make informed decisions about whether to visit a site or not.
WebODF	[ visit page] Viewer for OpenDocument Format office files. It can display documents saved from LibreOffice, OpenOffice, Calligra, Abiword, Microsoft Word, Excel, PowerPoint. The documents should be saved in the OpenDocument Format. Review notes: MozPlugger can be used instead Category:
WikiLook	[ visit page] Leading dictionary lookup add-on. Fast, light, open source tool that define words for you without need to open new tabs or windows. Wiktionary&Wikipedia. Ctrl or Shift or Alt + RightMouseButton click. Now with thesaurus. 70+ languages supported! Review notes: “ If you use Wikipedia a lot, this addon will enhance your experience and increase your productivity. Just hovering on any wikipedia link within wikipedia will show you a summary of the page behind that link. You could also use Interclue or Cool Previews to do the same though. If you want to see the definition of a word quickly(whether on wikipedia or on anyother page), just Ctrl+RClick the word and you will be shown a tiny popup definition of the word from wiktionary. The addon "Wiktionary and Google Translate" can do the same wiktionary popup thing, plus it can be used for word translations too. However, its popup is ugly and method of activation(selecting or double clicking a word for popup) may interfere with your other functions. I personally use WikiLook+Interclue as a combination/ “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/?page=29 Category:
WikiMatrix	[ visit page]
Window and Tab Limiter	[ visit page]
wmlbrowser	[ visit page] Simulate WAP browsing by viewing WML (Wireless Markup Language) pages.
WorldClient WebMail Notifier	[ visit page] Checks for new mails in the MDaemon Email Server.
WorldIP	[ visit page] 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.
Xinha Here!	[ visit page]
XPath Checker	[ visit page] An interactive editor for XPath expressions.
YesScript	[ visit page] A JavaScript blacklist
YouTube Embed2Link	[ visit page]
YouTube Grid Search and Preview Player	[ visit page]
YouTube High Definition	[ visit page] YouTube High Definition is a powerful tool that will let you automatically play all YouTube videos in HD (High Definition), turn off annotations, change video player size, auto stop videos, auto mute videos, control embedded videos and much more.
YouTube Video and Audio Downloader	[ visit page] Zotero plugin to manage your attachments: automatically rename, move, and attach files to Zotero items, sync PDFs from your Zotero library to your (mobile) PDF reader (e.g. an iPad, Android tablet, etc.) and extract annotations from PDF files.
Youtube Video Replay	[ visit page] Youtube Video Replay is a new tool that lets you replay Youtube Videos.
Zoom Page	[ visit page] Review notes: “Supports fit-to-width in one click(like Opera). The only addon that does so. See also NoSquint which does not have the fit to width function in one click, but can save your settings(which you can set to fit-to-width) and load them everytime you revisit the page. “ - https://addons.mozilla.org/en-US/firefox/collections/ChessWriter/my/ Category:
Zotero autoexporting	[ visit page] Exports library of Zotero automatically to specific format like bib, RDF etc.
ZotFile	[ visit page] Zotero plugin to manage your attachments: automatically rename, move, and attach files to Zotero items, sync PDFs from your Zotero library to your (mobile) PDF reader (e.g. an iPad, Android tablet, etc.) and extract annotations from PDF files.
µBlock	[ visit page] Finally, an efficient blocker. Easy on CPU and memory.