Free addons for IceCat
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 | |
| 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. | GPL (generic) | License is stated, as generic GPL, 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. | MPL 1.1 GPL 2.0 LGPL 2.1 | 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. | |
| Brief | An powerful and featured but easy and intuitive RSS reader. | MPL 1.1 | License is stated in the addons.mozilla web page. | |
| CS Lite | This extension will allow you to easily control cookie permissions | GPL 2.0 | License is provided by a license file. | |
| Cert Viewer Plus | Certificate viewer enhancements: PEM format view, file export. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded. | |
| ChatZilla | A IRC client. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded. | |
| 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. | |
| ColorZilla | Adds a graphical color picker tool. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is code-embedded. | |
| 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. | |
| 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. | |
| DownThemAll! | A mass downloader. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| Download Statusbar | View and manage downloads from a tidy statusbar - without the download window getting in the way of your web browsing. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| 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. | |
| 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. | |
| 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. | |
| 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. | |
| 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. | |
| 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. | |
| Google Reader Watcher | Checks your feeds regularly and see which feeds have unread news. | GPLv2 | License is provided by a license file. | |
| 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. | |
| 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 textareas using an external editor. | GPLv3 | License is provided by a license file. | |
| JSView | Allows you to view the source of JavaScript and CSS files. | GPLv2 or later | License is code-embedded. | |
| Launchy | Open links with external applications. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| 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. | |
| 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. | |
| 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. | |
| ModifyHeaders | It allows the user to Add, Modify and Filter out HTTP request headers. | 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. | |
| Multiproxy Switch | It lets you switch proxy between multiple configurations | MPL 1.1 | Licenses stated on the website. | |
| NewTabURL | This extension allows users to select the default URL when new tabs are opened. | GPLv3 | Licenses stated on the website. | |
| NoScript | Disable page scripts. | GPL 2.0 | License is provided by a license file. | |
| OpenInWindow | This extension allows you to open links in an existing window. | GPLv3 | Licenses stated on the website. | |
| 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. | |
| 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 Zoom | Adds a page zoom feature. | MPL 1.1/ GPL 2.0/ LGPL 2.1 | License is provided by a license file. | |
| 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. | |
| 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. | |
| 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. | |
| 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 | |
| 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. | |
| 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. | |
| ShowIP | Display information regarding the IPv4s and IPv6s about the current site in the status bar. | GPLv2 | License is provided by a license file. | |
| 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. | |
| 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. | |
| 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. | |
| TimeStamp Converter | This extension makes conversions of dates and timestamps. | GPLv3 | Licenses stated on the website. | |
| 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. | GPLv2 | License is provided by a license file. | |
| 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. | |
| 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. | |
| 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). | |
| 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. | |
| 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. | |
| 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. | |
| 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. | |
| 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. | |
| 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.