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Free addons for IceCat
Warning: this page has been deprecated in favor of two pages in the Free Software Directory: GNU IceCat's own entry and the IceCat extensions project page. If you are looking for free GNU IceCat addons, please visit those pages.
The http://addons.mozilla.org website, hosted on Mozilla servers, offers many addons to extend FireFox with additional features. The majority of these addons are not developed directly by Mozilla but by third party developers.
Many of these addons don't explicitly define a license, even if the original author thought it was unnecessary, so they can't be considered Free Software. Because of this issue, the GNU IceCat browser can't advise users to install and use them, in general. Below is the list of addons that we have checked to be Free.
We have not checked all addons present on the Mozilla web site. If you have looked at any other addon and found that it is explicitly released under a free software license, please contact us, specifying the addon license and the URL where it can be downloaded (better if providing a patch against the current version). Then we will update this page.
We do not want to list add-ons that are only helpers for "Software as a Service." That means the add-on sends your data to someone else's server, which does a computation on your data and sends you back the results. If you see an add-on in this list which appears to be just a front-end for Software as a Service, please report it to bug-gnuzilla@gnu.org.
If your favorite addon does not specify any license, please consider contacting the addon author about this issue. Please let us know if you do this.
| Free addons: addons | ||||
|---|---|---|---|---|
| Addon | Description | License | Note | |
| APNG Edit | It allows you to create animated PNG images. | MPL 1.1 | License is stated in the addons.mozilla web page. | |
| Aardvark | Utility for selecting elements and doing various actions on them. | BSD (generic, may be the 3-clause BSD license) | License is code-embedded. | |
| Adblock Plus | Lets you to block ads in web pages. | MPL 1.1 | License is code-embedded (as a comment). | |
| Adblock Plus Element hiding | Helps Adblock Plus hiding ads. | MPL 1.1 | License is code-embedded (as a comment). | |
| Add Bookmark Here 2 | Lets you to add 'Add New Bookmark' to the Bookmarks Toolbar. | MPL/1.1 | License is stated in the web page | |
| Add to Search Bar | Make any pages' search functionality available in the Search Bar | MPL1.1/GPL2.0 or later/LGPL 2.1 or later | Licenses stated on author's website. Versions given in LICENSE.TXT file. | |
| All-in-One Sidebar | All-in-One Sidebar (AiOS) is a sidebar control. | GPL 2.0 | Licenses stated on author's website. | |
| Ambulant Player | It is a media player with support for SMIL 3.0. | LGPL | Licenses stated on the website. | |
| AutoPager | Automatically loads next pages when you reach the end of a page. | GPL v2.0 | License is stated in the addons.mozilla web page. | |
| AutoPager Lite | Automatically loads next pages when you reach the end of a page. | GPL v2.0 | License is stated in the addons.mozilla web page. | |
| BarTab | It can intercept when tabs are loaded in the background or restored after a browser restart and will only load the content when the tab is actually visited. | MPL/1.1 | License stated on the web page. | |
| Beef Taco | It stops behavioral advertising by different companies | Apache 2.0 | License is code-embedded and stated on the webpage. | |
| Better amazon | Add useful extra features to Amazon. | GPLv2 | Licenses stated on the website. | |
| Better flickr | Add useful extra features to Flickr. | GPLv2 | Licenses stated on the website. | |
| Better gmail2 | Add useful extra features to Gmail. | GPLv2 | Licenses stated on the website. | |
| Better greader | Add useful extra features to Google Reader. | GPLv2 | Licenses stated on the website. | |
| Better youtube | Add useful extra features to YouTube. | GPLv2 | Licenses stated on the website. | |
| Brief | An powerful and featured but easy and intuitive RSS reader. | MPL 1.1 | License is stated in the addons.mozilla web page. | |
| CLEO | It works with FEBE* to package any number of extensions/themes into a single, installable .xpi file. | MPL 1.1 | License is stated on the website | |
| CSS Reloader | It allows you to reload all the CSS of any site without you have to reload the page itself. | Mozilla Public License, version 1.1 | License is stated on the web page. | |
| Cert Viewer Plus | Certificate viewer enhancements: PEM format view, file export. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded. | |
| Certificate Patrol | It reveals when certificates are updated, so you can ensure it was a legitimate change. | MPL 1.1 | License is stated in the addons.mozilla web page. | |
| ChatZilla | A IRC client. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded. | |
| CheckFox | Enables quick check/uncheck of checkboxes. | 3-clause BSD license | Licenses stated on the website | |
| CheckPlaces | Checks your bookmarks are valid and the pages still exist. Also checks for duplicates and for empty folders. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| ColorToggle | Toggles colors between two color profiles. | MPL 1.1 | License is stated on the webpage | |
| Compact Menu | Replace the original menubar into a single menu or icon. | MPL 1.1 | License is stated on the webpage | |
| Console Squared | It replaces the JavaScript Console with what could be the next generation Error Console. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| Conspiracy | Shows flag/country of involved Certification Authorities (CAs) for secured pages. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| Cookie Monster | It provides proactive cookie management on a site or domain level basis, including 3rd party cookies. | MPL 1.1 | License is stated on the addon webpage. | |
| CookieCuller | Keep the cookies you want, automatically delete the rest. | MPL 1.1 | License is provided by a license file. | |
| CookieSafe | It allows you to easily control cookie permissions. | GNU General Public License, version 2.0 | License is stated on the web page. | |
| Copy All Urls | Copies and pastes all urls of open tabs inclusive history in structured form to and from the clipboard. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| Customize Google | It enhances Google search results by adding extra information | GPL | License is stated on the website. | |
| Define | This extension searches the definition of the highlighted text in Google. | GPLv3 | Licenses stated on the website. | |
| DictsInfo | Using this extension, you can search any highlighted text in the All Free Dictionaries project - Dicts.info. | GPLv3 | Licenses stated on the website. | |
| Disable Ctrl-Q Shortcut | Disable Ctrl-Q Shortcut. Never close the browser by mistake again. | BSD License | Licenses stated on the website. | |
| DownThemAll! | A mass downloader. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| DownThemAll! AntiContainer | Make the resources behind container pages easily downloadable by DownThemAll! | GPL 2.0 | License is stated on the webpage. | |
| DragDropUpload | This extension helps you to upload files | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| Dummy Lipsum | This extension generates "Lorem Ipsum" dummy text (the text is taken from the Lorem Ipsum site). | GPLv3 | Licenses stated on the website. | |
| Duplicate Tab | Duplicate tabs, incorporate two or more windows into one... | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| Extension List Dumper | This extension adds a button ("Dump list") to the Add-ons window. | GPLv3 | Licenses stated on the website. | |
| FEBE | It allows you to quickly and easily backup your Firefox extensions | MPL 1.1 | License is stated on the webpage | |
| Fangs | Renders a text version of a web page similar to screen reader output. | GPLv2 or later | License is provided by a readme file. | |
| Find In Tabs | Searches for text in all tabs. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded. | |
| FireBug | FireBug puts a wealth of web development tools at your fingertips while you browse. | 3-clause BSD license | License is provided by a license file. | |
| FireFTP | A a free, secure, cross-platform FTP client. | MPL 1.1/ GPL 2.0 | License is provided by a license file. | |
| FireGPG | Use GPG easily with GNU IceCat. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| FireGestures | FireGestures is an extension which enables you to execute various commands with five types of mouse gestures. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| Firediff | Track changes in Firebug | BSD License | License stated on the webpage. | |
| Firefogg | Video encoding and uploading | GPLv3 | License is provided by a license file. | |
| Firefox Showcase | Preview and manage open tabs. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| Firemacs | Firemacs provides some Emacs-like key bindings for IceCat. | BSD | License stated on the website | |
| Fission | Combines the address bar and the progress bar. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| Flash Video Downloader | It helps you to download flash video (.flv) from video sharing websites in one click. | MPL 1.1 | License is stated on the web page. | |
| FlashBlock | Disables Flash's autoplay. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License only written on site; based on the Flash-Click-to-View XBL stylesheet | |
| FlashGot | A mass downloader with browser integration for many popular download managers. | GPLv2 | License is provided by a license file. | |
| FlashVideoReplacer | Replaces embedded Flash videos with compatible videos. | GPLv3 | License is stated on the web page. | |
| FontFinder | Get all CSS styles of selected text. | GPLv3 | License is stated on the web page. | |
| Forecastfox l10n | It's a french translation for Forecastfox, which brings international weather in IceCat. | MPL 1.1 / GPL 2.0 / LGPL 2.1 | License is provided by a license file. | |
| FoxReplace | It lets you replace text in web pages. | GPL 2.0 | License is stated on the addons.mozilla.org page | |
| Foxclocks | FoxClocks is an extension to display world times in your statusbar (or any toolbar). | GPL 2.0 | License is provided by a license file. | |
| FoxyProxy Basic | It is a simple on/off proxy switcher. | GPLv2 | License is provided by a license file. | |
| FoxyProxy Standard | It is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities | GPLv2 | License is provided by a license file. | |
| Google Reader Watcher | Checks your feeds regularly and see which feeds have unread news. | GPLv2 | License is provided by a license file. | |
| GoogleSharing | Provide a level of anonymity that will prevent Google from tracking your searches. | GPLv3 | License is provided by a license file and stated on the webpage. | |
| Greasefire | Automatically find Greasemonkey scripts on Userscripts.org. | GPL 3.0 | License is provided by a license file. | |
| Greasemonkey | Allows you to customize the way webpages look and function using scripts. | Expat License (aka MIT License) | License is provided by a license file. Note that this license applies only to the Greasemonkey extension source files, not to the scripts which it can run. Scripts are licensed separately by their authors so you should check them separately in order to verify if they are free software. | |
| HTTPFox | HttpFox monitors and analyzes all incoming and outgoing HTTP traffic between the browser and the web servers.. | GPLv2 | License is provided by a license file. | |
| HTTPS Everywhere | It encrypts your communications with a number of major websites by rewriting all requests to HTTPS. | GPLv2 | License is provided by a license file. | |
| HackTheWeb | A tool to let you hack out all the stuff that annoys you (aardvark replacement). | Custom 3-clause BSD license. | License is code embedded and stated in the addons.mozilla web page. | |
| HandyTag | It provides a complete set of most relevant keywords in the bookmark's edition panel. | GPL 3.0 | License is stated on the addons.mozilla.org web page. | |
| Html Validator | Adds HTML validation to the View Page Source of the browser. The validation is done by Tidy or a SGML Parser from W3c. | MPL 1.1 | License is provided by a license file (with the source code, separately downloadable). | |
| Image Zoom | Adds the image zoom function. | GPLv2 | License is provided by a license file. | |
| ImgLikeOpera | It allows turning on/off graphics on web pages. | MPL 1.1/GPL 2.0/LGPL 2.1 | License is provided by a license file. | |
| InfoLister | Collects various information about installed extensions, themes and plugins and saves it in standard formats and customizable ways. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| It's all text! | Edit text areas using an external editor. | GPLv3 | License is provided by a license file. | |
| JSONView | JSON documents are shown in the browser similar to how XML documents are shown. | MIT/X11 License | License is stated in the web page. | |
| JSView | Allows you to view the source of JavaScript and CSS files. | GPLv2 or later | License is code-embedded. | |
| Kitsune | It enables Japanese input even when no system IME is installed. | GPLv3 | License is stated in the web page. | |
| Launchy | Open links with external applications. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| LeechBlock | It is a simple productivity tool designed to block those time-wasting sites specifying which sites to block and when to block them. | MPL 1.1/GPL 2.0/LGPL 2.1 | License is provided on the web site. | |
| GNU LibreJS | Blocks nontrivial nonfree JavaScript, while allowing free and/or trivial JavaScript. | GPLv3 or later | License is provided by a license file and specified in the source files. | |
| Link evaluator | It attempts to download the Web page behind each link and searches for 2 customizable sets of phrases | Apache 2.0 | License is stated in the web page. | |
| Linky | It will let you open or download all or selected links, image links and even web addresses found in the text | MPL 1.1/GPL 2.0/LGPL 2.1 | License specified in the source files. | |
| Live HTTP Headers | View HTTP headers. | GPLv2 or later | License is code-embedded | |
| Location 2 | More than a textbox. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| Longdesc | Makes an image's longdesc link attribute accessible via context menu. | CC-BY-SA 2.0 | License is provided by a license file. | |
| MM3-ProxySwitch | Manage different proxy configurations and simply switch over between these. | GPLv3 | License is provided by a license file. | |
| Manage folders | Places a "Manage Folder" item on the context menu of bookmark folders. | MPL 1.1 | License is stated in the addons.mozilla web page. | |
| Mecab | NLP (Natural Language Processing) that can process written japanese text. | GPLv2 or later | License is provided by a license file. | |
| MediaPlayerConnectivity | It allows you to launch embed video of website in an external application with a simple click. | MPL 1.1 | License is stated in the addons.mozilla web page. | |
| ModifyHeaders | It allows the user to Add, Modify and Filter out HTTP request headers. | MPL 1.1 | License stated on the website. | |
| Morning Coffee | Keeps track of daily routine websites and opens them in tabs | MPL 1.1 | License stated on the website. | |
| Mouseless | It enables you to browse the internet with the keyboard. | BSD | License is provided on the web site. | |
| Moxilnet | It allows users to send free SMS text messages to movilnet's cellphones in Venezuela. | GPLv3 | License is stated on Mozilla Addons site and project page. | |
| Mozilla Archive Format (with Faithful Save) | Save exactly what you see, in a single file, MAFF (based on ZIP) or MHT. | GNU General Public License, version 2.0 | License is stated on the webpage | |
| Mozilla Labs - Prism | Create Prism applications directly from the browser | MPL 1.1 | License is stated on the webpage | |
| Mozilla Labs - Ubiquity | It allows for the use of dynamic commands. | MPL 1.1 | License is stated on the webpage | |
| Multiproxy Switch | It lets you switch proxy between multiple configurations | MPL 1.1 | Licenses stated on the website. | |
| Murdoch Alert | Warns you whenever you visit one of the 100+ Murdoch Family-controlled websites. | MPL 1.1 | License is stated in the addons.mozilla web page. | |
| NewTabURL | This extension allows users to select the default URL when new tabs are opened. | GPLv3 | Licenses stated on the website. | |
| NewsFox | NewsFox is an efficient 3-pane(email) style Atom/RSS feed reader. | MPL 1.1 | Licenses stated on the website. | |
| NoScript | Disable page scripts. | GPL 2.0 | License is provided by a license file. | |
| NoSquint | NoSquint allows you to adjust the text-only and full-page zoom levels as well as color settings both globally and per site. | LGPLv2 | Licenses stated on the addons.mozilla.org website. | |
| Nuke anything enhanced | It allows you to hide almost anything via context menu 'Remove Object'. | LGPL 2.1+ | License specified in the source file. | |
| OmniBar | Integrates location bar and search bar into one. | MPL 1.1 | Licenses stated on the website. | |
| OpenAttribute | Displays license and attribution information for Creative Commons licensed content. | GPL 3.0 | Licenses stated on the website. | |
| OpenInWindow | This extension allows you to open links in an existing window. | GPLv3 | Licenses stated on the website. | |
| OptimizeGoogle | Enhance Google search results and remove ads and spam. | GPLv2 | License stated in the README.txt file. | |
| Organize Search Engines | Organize your search engines with separators and folders. | MPL1.1/GPL2.0 or later/LGPL 2.1 or later | Licenses stated on author's website. Versions given in LICENSE.TXT file. | |
| OverbiteFF | It replaces and enhances Firefox's gopher support | MPL1.1/GPL2.0 or later/LGPL 2.1 or later | License is provided by a license file. | |
| PDF Download | Use PDF Download to do whatever you like with PDF files on the Web. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| Page Validator | Validates a page using the W3C Markup Validation Service. | MPL1.1 | License is stated on the web page | |
| Page Zoom | Adds a page zoom feature. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| Paste to Tab and Go | Paste URL/text to a tab/new tab and load/search it immediately. | MPL 1.1 | License stated on the website. | |
| Permit Cookies | Set cookie permissions for the site you are visiting. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| Perseus | It allows your data to be protected when sent over HTTP protocol. | MPL/GPL/LGPL | License is stated on the web site. | |
| Personas for Firefox | Changes the look of the browser easily | MPL 1.1/GPL 2.0/LGPL 2.1 | Licenses stated on the website. | |
| Phzilla | Secures anonymity using web-based proxy | MPL 1.1 | Licenses stated on the website. | |
| Plain Text Links | Opens plain text URL as if they were real HTML links. | MPL/GPL/LGPL | Licenses stated on the website. | |
| Prefswitch | Add preference switches to the status bar. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| PrevNextArrows | Arrows to go to next and previous URLs of sequential photos and a gallery to view them. | GPL 3.0 | License is stated on the web site. | |
| Print/Print Preview | Replace the default "Print" button with a "Print/Print Preview" toolbar button/menu, with additional "Page setup" option. | CC-BY-SA 2.0 | License is provided by a license file. | |
| Priv3 | Priv3 protects you from being tracked by social networks. | BSD License | License is specified on the addons.mozilla.org webpage | |
| ProfileSwitcher | Makes easier and handier use more profiles. | GPLv3 | License is provided by a license file. | |
| QuickJava | Allows quick enable/disable of Java, Javascript, Flash, etc | MPL 1.1 | License is stated in the addons.mozilla web page. | |
| QuickProxy | Statusbar button to turn the proxy on and off with a single click. | MPL 1.1 | License is stated in the addons.mozilla web page. | |
| QuickRestart | This simple extension adds a "Restart Firefox" item to the "File" menu | MPL 1.1 | License stated on the website. | |
| RefControl | Lets you gain per-site control over the transmitted HTTP referer. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| ReloadEvery | Reloads web pages every so many seconds or minutes. | MPL 1.1 | Licenses stated on the website. | |
| RequestPolicy | It improves the privacy and security of your browsing by giving you control over when cross-site requests. | GPLv3 | License is provided by a license file. | |
| Right-click-link | Opens selected text in a new tab. | 3-clause BSD license | License is stated in the addons.mozilla web page. | |
| Rikaichan | rikaichan is a popup Japanese-English/German/French/Russian dictionary extension for Firefox. | GPLv2 | License is stated on the web page. | |
| SQLite Manager | SQLite database editor. | MPL 1.1 | License is provided by a license file. | |
| SamePlace | Instant messaging client | GPLv3 | License stated in a file | |
| Scrapbook | Helps you to save Web pages and organize the collection. | MPL 1.1 | License is stated on the web page. | |
| Scrapbook+ | It is a modified version of scrapbook. | MPL 1.1 | License is stated on the web page. | |
| Screen grab! | Saves a web-page as an image. | GPLv3 | License is stated in the web page. | |
| ScribeFire | An easy and well integrated blog editor. | GPLv2 | License is provided by a license file. | |
| Scriptish | A fork of Greasemonkey. | MIT/X11 | License is stated on the addons.mozilla.org web page. | |
| Scroogle SSL search | lets you search with Google anonymously. | GPLv3 | License is stated in the web page. | |
| Search on Engine Change | Automatically searches for the text in the search box when another search engine is selected. | MPL1.1/GPL2.0 or later/LGPL 2.1 or later | Licenses stated on author's website. Versions given in LICENSE.TXT file. | |
| SearchIMDB | This extension searches the highlighted text in IMDB. | GPLv3 | Licenses stated on the website. | |
| Secure Login | Secure Login is an integrated password manager. | GPL | License is stated in the web page http://securelogin.mozdev.org/drupal/wiki/License. | |
| Server Spy | Indicates what brand of HTTP server runs on the visited site. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded (as a comment). | |
| Session Manager | Save and restore the status of all windows. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| Shooter | It allows you to take a screenshot of a given browser page, or a specific region of it. | GPL 3.0 | License is stated in the addons.mozilla web page. | |
| ShowIP | Display information regarding the IPv4s and IPv6s about the current site in the status bar. | GPLv2 | License is provided by a license file. | |
| Sidebar Bookmarks Search Plus | It displays a tree of the bookmarks under the search results of the sidebar bookmarks. | MPL 1.1 | License is stated in the addons.mozilla web page. | |
| Simple Timer | A timer/clock residing in the statusbar/toolbar. | MPL 1.1 | License is stated in the addons.mozilla web page. | |
| SimplyRead | It removes unwanted distractions from webpages. | AGPLv3+ | License is specified in the COPYING fil. | |
| Siphon - Add-on Synchronizer | Keep your favorite Extensions synced with all your computers. | GPLv3 | License is stated in the web page. | |
| Small Screen Renderer | It adds a new menu entry "Small Screen Rendering" under the View menu. | MPL 1.1 | License is stated in the addons.mozilla web page. | |
| SmoothWheel | It enables smooth scrolling. | GPLv2 | License is stated in the web page. | |
| SpeedDial | Speed Dial allows fast access to your most visited websites. It loads in a tab, and will show thumbnail views of its assigned websites. Those thumbnails will be refreshed automatically in the background. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| Status-4-Evar | Status bar widgets and progress indicators | MPL 1.1 | License is stated on the web page. | |
| Statusbar Date() | Displays a highly customisable local or foriegn date/time in the statusbar. | MPL 1.1 | License is stated in the web page. | |
| Stylish 1.0.6 | Restyle the web with Stylish, a user styles manager. | GPLv3 | License is provided on the website. | |
| SyncPlaces | Synchronizes your bookmarks, passwords and password exception lists between different browsers. Bookmarks and Passwords are stored on your own or third party web or ftp server so you have complete control and privacy. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| Tab Catalog | Shows thumbnail-style catalog of tabs. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file (with the source code, separately downloadable). | |
| Tab Control | Take control of your tabs! | GPL 2.0 | License is provided by a license file. | |
| Tab Kit | It makes tabs radically more efficient through tab grouping. | GPL 2.0 | License is stated on the webpage. | |
| Tab Mix Plus | It enhances Firefox's tab browsing capabilities. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| Tab To Window | This extension allows the user to move or copy a tab to a new window. | GPLv3 | Licenses stated on the website. | |
| Tabs Open Relative | Makes all new tabs open to the right of the current tab. | MIT/X11 | Licenses stated on the website. | |
| Tamper Data | View and modify HTTP headers. | GPLv2 or later | License is code-embedded. based on Live HTTP Headers extension. | |
| Temporary Inbox | A temporary inbox / forwarding web tool. | MPL 1.1 | License is code-embedded. | |
| Text Link | Allows URI texts written in webpages to be loaded by double clicks. | MPL 1.1/GPL 2.0/LGPL 2.1 | Licenses stated on the website. | |
| TextLink | Allows URI texts written in webpages to be loaded by double clicks. | MPL 1.1/GPL 2.0/LGPL 2.1 | License is provided by a license file. | |
| Thunderbirdbiff | This add-on provides a visual indicator of new mail availability in supported clients | MPL 1.1 | License stated on the web page. | |
| Tile Tabs | It allows tabs to be tiled within the browser | GPLv3 | License stated on the addons.mozilla.org website. | |
| TimeStamp Converter | This extension makes conversions of dates and timestamps. | GPLv3 | Licenses stated on the website. | |
| TinEye Reverse Image Search | TinEye is a reverse image search engine. | MPL 1.1 | License is stated on the addon webpage. | |
| TinyMenu | Replace the standard menu bar with a tiny menu popup. | MIT/X11 | License is provided by a license file. | |
| ToggleUseDocColors | Allow users to choose their own colors with a single keystroke. | GPL 3 | License is provided by a license file. | |
| Torbutton | A 1-click way to enable or disable the browser's use of Tor. | Expat License (aka MIT License) | License is provided by a license file. | |
| UnMHT | Save webpage into single file as MHT (MHTML, RFC2557) format, and view saved MHT files. | MPL 1.1/GPL 2.0/LGPL 2.1 | License is provided on the website. | |
| Undo Closed Tabs Button | Allows to undo closed tabs via a toolbar button and/or a tab bar button. | MPL 1.1 | License is provided by a license file (with the source code, separately downloadable). | |
| Unicode Input Tool/Converter | Unicode lookup and chart view to find international characters or symbols. | LGPL 3 | License included in every source file | |
| Unplug | A video download tool which lets you save video and audio which is embedded on a webpage. | Affero GPL license (version 3). | License is stated on the website. | |
| Uppity | Navigate up one level (directory). | Expat license (aka MIT License) | License is stated in the addons.mozilla web page. | |
| UserAgentSwitcher | The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of the browser. | GPLv3 | License is provided by a license file. | |
| VLC Media Player plugin | This plugin adds direct support for VLC media playback. | GPL/3.0 | License is stated on the webpage. | |
| Verificador Ortográfico, VERO | pt-BR and pt-pt spellchecker dictionary covering the Portuguese language orthographic agreement | LGPLv2.1 | License is provided by a license file. | |
| Vimperator | Vimperator makes the browser look and behave like the Vim text editor. | MPL 1.1/GPL 2.0/LGPL 2.1 | License is provided by a license file. | |
| WCAG Contrast checker | Check whether the combination of two colors gives an appropriate contrast for visual perception | MPL 1.1 | License is stated in the addons.mozilla web page. | |
| Weave | Provides synchronization between different instances of the browser | MPL 1.1/GPL 2.0/LGPL 2.1 | License is stated on the website. | |
| Web Developer | Adds a menu and a toolbar with various web developer tools. | GPLv3 | License is provided by a license file. | |
| WikiLook | It is a Wikipedia & Wiktionary look up. | GPLv3 | License stated on the website. | |
| Window Resizer | A useful tool for testing different screen resolution sizes. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| Zarafa new mail extension | It periodically checks if there is new mail in your Zarafa inbox. | LGPL 2.1 | License is provided by a license file. | |
| Zoomfox | Adds a context menu for better zoom control. | GPL (generic) | License is provided by a license file (about.xul). | |
| Zotero | It helps you collect, organize, cite, and share your research sources | AGPLv3 | License is provided by a file | |
| cliget | Generates wget/curl commands for downloads (including secured ones) allowing to download from command line. | MPL 1.1 | License is stated in the addons.mozilla web page. | |
| deskCut | Adds the ability to create desktop shortcuts from the right-context menu. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded. | |
| nzbdStatus | Adds controls and a monitor for a Usenet download daemon to the status bar. | GPLv3 | License is specified on the addons.mozilla.org web page. | |
| pastebin | Extension that gives functionality for quick usage of www.pastebin.com | GPL 3.0 | License is stated in the addons.mozilla web page. | |
| pentadactyl | Firefox for Vim and Links addicts. The next generation of Vimperator by its primary developers. | MIT/X11 License | License is specified on the addons.mozilla.org page. | |
| searchOnTab | This extension allows users to select where are loaded the results of the search bar. | GPLv3 | Licenses stated on the website. | |
| withAttach | This extension modifies the "Write" toolbar button and adds an option to compose an email "with attachments". | GPLv3 | Licenses stated on the website. | |
| xmpp4moz | XMPP library | GPLv3 | License is stated on the web site | |
| Free addons: search engines | ||||
|---|---|---|---|---|
| Addon | Description | License | Note | |
| Mycroft Project | The Mycroft Project provides a collection of Search Engine Plugins | Various | License is stated on the website | |
| Free addons: themes | ||||
|---|---|---|---|---|
| Addon | Description | License | Note | |
| Abaca Classic | Theme with big icons. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded in CSS files. | |
| Aeon Big | Clear and bright theme using big icons. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded in CSS files. | |
| Arctic Glow | A blue arctic-style theme. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded in CSS files. | |
| Black Stratini | Dark theme based on Stratini. | MPL 1.1 | License is stated on the web page | |
| Blue Bear Baby | A blue theme with little bears, for children. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded in CSS files. | |
| Camifox | Camifox is a thoughtful and sophisticated reimagination and realization of a better “default”-like theme, in living color on all platforms. | MPL 1.1 | License is stated on the webpage. | |
| Chromifox Basic | Chromifox Basic is a bright and soft blue theme for Firefox inspired by the appearance of the Chromium browser. | MPL 1.1 | License is stated on the webpage. | |
| FormalGnome Big | Clean theme with big icons. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded in CSS files. | |
| Grand Green | Green nature-style theme. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded in CSS files. | |
| HiVis | A high-contrast theme, icons are normal-sized. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded in CSS files. | |
| Kempelton | Elegant, modern and professional icons. | https://addons.mozilla.org/firefox/addon/kempelton/ | License is stated on the webpage. | |
| LavaSoft | LavaFox - A dark and hot theme. | MPL 1.1 | License is stated on the webpage. | |
| Mars | Icons come from the Gorilla icon set. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded in CSS files. | |
| MidnightFox | A black theme with neon-like colors for icons. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded in CSS files. | |
| Mythical Sirens Summer Night | A purple theme with mythical/mistic icrons. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded in CSS files. | |
| Neptune | Icons come from the Unicorn icon set. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded in CSS files. | |
| Omega | A simple theme. Icons come from BUUF icon theme. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded in CSS files. | |
| Orbit Orange | A theme with round orange icons. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded in CSS files. | |
| Oxygen KDE theme | KDE Oxygen style | GPLv3 | License is specified on the web page | |
| Past Modern | The battle of "REAL MODERN" | MPL 1.1 | License is specified in a file. | |
| Phoenity Reborn | A simple and colorfful theme derived from Phoenity. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded in CSS files. | |
| Pink-bee | A pink theme for children. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded in CSS files. | |
| PitchDark | A black minimalistic theme. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded in CSS files. | |
| Playground | Icon come from the Mantzy icon set. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded in CSS files. | |
| Rain | Icons derive from Orbit icon set. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded in CSS files. | |
| Scribbles Brite 3 | A brightly colored theme with fun icons. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded in CSS files. | |
| zblack | A compact theme, mostly black. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded in CSS files. | |
Copyright 2009 Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
Verbatim copying and distribution of this entire article are permitted worldwide, without royalty, in any medium, provided this notice, and the copyright notice, are preserved.