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Mozilla Firefox



 
 
Mozilla Firefox is a web browser
Web browser

A Web browser is a application software which enables a user to display and interact with text, images, videos, music, games and other information typically located on a Web page at a website on the World Wide Web or a local area network....
 descended from the Mozilla Application Suite
Mozilla Application Suite

The Mozilla Application Suite is a cross-platform integrated Internet suite. Its development was initiated by Netscape Communications Corporation, before their acquisition by AOL....
 and managed by Mozilla Corporation
Mozilla Corporation

The Mozilla Corporation is a wholly owned subsidiary of the Mozilla Foundation that coordinates and integrates the development of Internet-related application softwares such as the Mozilla Firefox web browser and the Mozilla Thunderbird email client by the growing global community of open-source developers, only some of whom are employed by...
. Official versions are distributed under the terms of the proprietary EULA. Firefox had 21.73% of the recorded usage share of web browsers
Usage share of web browsers

Usage share, in web browser statistics, is the percentage of visitors to a group of web sites that use a particular browser. For example, when it is said that Internet Explorer has 67% usage share, it means Internet Explorer is used by 67% of visitors that visit a given set of sites....
 as of February 2009, making it the second-most popular browser in current use worldwide, after Internet Explorer
Internet Explorer

Windows Internet Explorer , commonly abbreviated to IE, is a series of graphical user interface web browsers developed by Microsoft and included as part of the Microsoft Windows line of operating systems starting in 1995....
.

To display web pages, Firefox uses the Gecko
Gecko (layout engine)

Gecko is a layout engine currently developed by Mozilla Corporation, known as the layout engine of the Mozilla Firefox web browser, Mozilla Application Suite, Nvu, Mozilla Thunderbird and many more....
 layout engine
Layout engine

A layout engine, or rendering engine, is software that takes Markup language content and formatting information and displays the formatted content on the screen....
, which implements some current web standards
Web standards

Web standards is a general term for the formal Internet standards and other technical specifications that define and describe aspects of the World Wide Web....
 plus a few features which are intended to anticipate likely additions to the standards.

Firefox includes tabbed browsing
Tabbed browsing

Tabbed browsing refers to use of internet browsers which allow multiple tabs to be opened within the window the browser is open in, each tab displaying a web-page....
, a spell checker
Spell checker

In computing, a spell checker is an application software that flags words in a document that may not be spelling correctly. Spell checkers may be stand-alone capable of operating on a block of text, or as part of a larger application, such as a word processor, email client, electronic dictionary, or search engine....
, incremental find
Incremental find

In computing, incremental find is a user interface interaction method to progressively search for and filter through text. As the user types text, one or more possible matches for the text are found and immediately presented to the user....
, live bookmarking
Livemark

Livemark, commonly known as "Live Bookmark", was first introduced by Mozilla Firefox. The term "Live Bookmark" has since been adopted by both Microsoft's Internet Explorer and Apple Inc.'s Safari and is made up of a combination of an RSS web feed and a special Internet bookmark....
, a download manager
Download manager

A download manager is a computer program dedicated to the task of Uploading and downloading possibly unrelated stand-alone files from the Internet for storage....
, and an integrated search system that uses the user's desired search engine
Web search engine

A Web search engine is a tool designed to search for information on the World Wide Web. The search results are usually presented in a list and are commonly called hits....
.






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Encyclopedia


Mozilla Firefox is a web browser
Web browser

A Web browser is a application software which enables a user to display and interact with text, images, videos, music, games and other information typically located on a Web page at a website on the World Wide Web or a local area network....
 descended from the Mozilla Application Suite
Mozilla Application Suite

The Mozilla Application Suite is a cross-platform integrated Internet suite. Its development was initiated by Netscape Communications Corporation, before their acquisition by AOL....
 and managed by Mozilla Corporation
Mozilla Corporation

The Mozilla Corporation is a wholly owned subsidiary of the Mozilla Foundation that coordinates and integrates the development of Internet-related application softwares such as the Mozilla Firefox web browser and the Mozilla Thunderbird email client by the growing global community of open-source developers, only some of whom are employed by...
. Official versions are distributed under the terms of the proprietary EULA. Firefox had 21.73% of the recorded usage share of web browsers
Usage share of web browsers

Usage share, in web browser statistics, is the percentage of visitors to a group of web sites that use a particular browser. For example, when it is said that Internet Explorer has 67% usage share, it means Internet Explorer is used by 67% of visitors that visit a given set of sites....
 as of February 2009, making it the second-most popular browser in current use worldwide, after Internet Explorer
Internet Explorer

Windows Internet Explorer , commonly abbreviated to IE, is a series of graphical user interface web browsers developed by Microsoft and included as part of the Microsoft Windows line of operating systems starting in 1995....
.

To display web pages, Firefox uses the Gecko
Gecko (layout engine)

Gecko is a layout engine currently developed by Mozilla Corporation, known as the layout engine of the Mozilla Firefox web browser, Mozilla Application Suite, Nvu, Mozilla Thunderbird and many more....
 layout engine
Layout engine

A layout engine, or rendering engine, is software that takes Markup language content and formatting information and displays the formatted content on the screen....
, which implements some current web standards
Web standards

Web standards is a general term for the formal Internet standards and other technical specifications that define and describe aspects of the World Wide Web....
 plus a few features which are intended to anticipate likely additions to the standards.

Firefox includes tabbed browsing
Tabbed browsing

Tabbed browsing refers to use of internet browsers which allow multiple tabs to be opened within the window the browser is open in, each tab displaying a web-page....
, a spell checker
Spell checker

In computing, a spell checker is an application software that flags words in a document that may not be spelling correctly. Spell checkers may be stand-alone capable of operating on a block of text, or as part of a larger application, such as a word processor, email client, electronic dictionary, or search engine....
, incremental find
Incremental find

In computing, incremental find is a user interface interaction method to progressively search for and filter through text. As the user types text, one or more possible matches for the text are found and immediately presented to the user....
, live bookmarking
Livemark

Livemark, commonly known as "Live Bookmark", was first introduced by Mozilla Firefox. The term "Live Bookmark" has since been adopted by both Microsoft's Internet Explorer and Apple Inc.'s Safari and is made up of a combination of an RSS web feed and a special Internet bookmark....
, a download manager
Download manager

A download manager is a computer program dedicated to the task of Uploading and downloading possibly unrelated stand-alone files from the Internet for storage....
, and an integrated search system that uses the user's desired search engine
Web search engine

A Web search engine is a tool designed to search for information on the World Wide Web. The search results are usually presented in a list and are commonly called hits....
. Functions can be added through add-ons
List of Firefox extensions

This is a list of some of the many available Add-on , software add-ons designed for Mozilla Firefox based web browsers. Many Firefox extensions work in the SeaMonkey and Flock web browsers as well....
 created by third-party developers, the most popular of which include the NoScript
NoScript

NoScript is a free and open-source List of Firefox extensions for Mozilla Firefox, SeaMonkey, Flock and other Mozilla-based browsers. NoScript allows JavaScript, Java , Adobe Flash, Microsoft Silverlight and other plugins and scripted content to be selectively executed based on a whitelist....
 JavaScript disabling utility, Tab Mix Plus
Tab Mix Plus

Tab Mix Plus is a Mozilla Firefox Extension that adds to the Tabbed document interface functions in Firefox. It is a popular extension on Mozilla Add-ons, which records download statistics....
 customizer, FoxyTunes
FoxyTunes

FoxyTunes is a browser extension which allows the user to control media player from the browser window. FoxyTunes works in Mozilla Firefox, Internet Explorer, SeaMonkey, Mozilla Application Suite, Flock and Mozilla Thunderbird....
 media player control toolbar, Adblock Plus ad blocking utility, StumbleUpon
StumbleUpon

StumbleUpon is an Internet community that allows its users to discover and rate Web pages, photos, and videos. It is a personalized recommendation engine which uses peer and social networking principles....
 (website discovery), Foxmarks Bookmark Synchronizer (bookmark synchronizer), WOT: Web of Trust
WOT: Web of Trust

Web of Trust , founded by Against Intuition Inc., is an Internet add-on that determines the safety of a website through user testimonials by the use of a meritocracy....
 security site advisor, DownThemAll!
DownThemAll!

DownThemAll is a download manager/accelerator extension for Mozilla Firefox, licensed under the GPL. It can pause and restart supporting downloads at any time, without losing data, and enables users to download all the links, images or embedded object contained in a webpage....
 download enhancer, and Web Developer
Web Developer (Mozilla extension)

Web Developer is an Mozilla extension for Mozilla-based web browsers which adds editing and debugging tools for web developers. It has been tested to be compatible with Firefox, Flock , and Seamonkey....
 toolbar.

Firefox runs on various versions of Microsoft Windows
Microsoft Windows

Microsoft Windows is a series of software operating systems and graphical user interfaces produced by Microsoft. Microsoft first introduced an operating environment named Windows in November 1985 as an add-on to MS-DOS in response to the growing interest in graphical user interfaces ....
, Mac OS X
Mac OS X

Mac OS X is a line of computer operating systems developed, marketed, and sold by Apple Inc., and since 2002 has been included with all new Macintosh computer systems....
, Linux
Linux

Linux is a generic term referring to Unix-like computer operating systems based on the Linux kernel. Their development is one of the most prominent examples of free and open source software collaboration; typically all the underlying source code can be used, freely modified, and redistributed by anyone under the terms of the GNU GPL license...
, and many other Unix-like
Unix-like

A Unix-like operating system is one that behaves in a manner similar to a Unix system, while not necessarily conforming to or being certified to any version of the Single UNIX Specification....
 operating systems. Its current stable release is version 3.0.7, released on March 4, 2009. Firefox's source code
Source code

In computer science, source code is any collection of statements or declarations written in some human-readable computer programming language....
 is free software
Free software

Free Software or software libre is software that can be used, studied, and modified without restriction, and which can be copied and redistributed in modified or unmodified form either without restriction, or with minimal restrictions only to ensure that further recipients can also do these things and to prevent consumer-facing hardware...
, released under a tri-license GNU GPL
GNU General Public License

The GNU General Public License is a widely used free software license, originally written by Richard Stallman for the GNU project. The GPL is the most popular and well-known example of the type of strong copyleft license that requires derived works to be available under the same copyleft....
/GNU LGPL
GNU Lesser General Public License

The GNU Lesser General Public License or LGPL is a free software license published by the Free Software Foundation . It was designed as a compromise between the strong-copyleft GNU General Public License and permissive licenses such as the BSD licenses and the MIT License....
/MPL
Mozilla Public License

The Mozilla Public License is a free software and open source software license. Version 1.0 was developed by Mitchell Baker when she worked as a lawyer at Netscape Communications Corporation and version 1.1 at the Mozilla Foundation....
.

History

Dave Hyatt
Dave Hyatt

Dave Hyatt is an United States software developer currently employed by Apple Inc. , where he is part of the development team responsible for the Safari web browser and WebKit framework....
 and Blake Ross
Blake Ross

Blake Aaron Ross is an United States software developer who is known for his work on the Mozilla web browser; in particular, he started the Mozilla Firefox project with Dave Hyatt, as well as the Spread Firefox project with Asa Dotzler while working as a contractor at the Mozilla Foundation....
 began working on the Firefox project as an experimental branch of the Mozilla project. They believed the commercial requirements of Netscape's sponsorship and developer-driven feature creep compromised the utility of the Mozilla browser. To combat what they saw as the Mozilla Suite's
Mozilla Application Suite

The Mozilla Application Suite is a cross-platform integrated Internet suite. Its development was initiated by Netscape Communications Corporation, before their acquisition by AOL....
 software bloat
Software bloat

Software bloat, also known as bloatware or elephantware, is a term used in both a neutral and disparaging sense, to describe the tendency of newer computer programs to be larger, or to use larger amounts of system resources than necessary for the same or similar benefits from older versions to its users....
, they created a stand-alone browser, with which they intended to replace the Mozilla Suite. On April 3, 2003, the Mozilla Organization announced that they planned to change their focus from the Mozilla Suite to Firefox and Thunderbird
Mozilla Thunderbird

Mozilla Thunderbird is a Free software, open source, cross-platform e-mail client and news client developed by the Mozilla Foundation. The project strategy is modeled after Mozilla Firefox, a project aimed at creating a web browser....
.

The Firefox project has undergone several name changes. Originally titled Phoenix, it was renamed because of trademark
TradeMark

TradeMark is a tall, primarily residential, skyscraper in Charlotte, North Carolina. It was completed in 2007 and has 28 floors. There are 200 hundred residential units....
 issues with Phoenix Technologies
Phoenix Technologies

Phoenix Technologies Ltd designs, develops and supports core system software for personal computers and other computing devices. Phoenix's products, which are commonly referred to as BIOS or firmware, support and enable the compatibility, connectivity, security and manageability of the various components and technologies used in such device...
. The replacement name, Firebird, provoked an intense response from the Firebird
Firebird (database server)

Firebird is an open source relational database management system that runs on Linux, Microsoft Windows, and a variety of Unix platforms. The database fork from Borland's open source edition of InterBase in 2000, but since Firebird 1.5 the code has been largely rewritten....
 free database software project. In response, the Mozilla Foundation stated that the browser should always bear the name Mozilla Firebird to avoid confusion with the database software. Continuing pressure from the database server's development community forced another change; on February 9, 2004, Mozilla Firebird became Mozilla Firefox, often referred to as simply Firefox. Mozilla prefers Firefox to be abbreviated as Fx or fx, though it is often abbreviated as FF.

The Firefox project went through many versions before 1.0 was released on November 9, 2004. After a series of stability and security fixes, the Mozilla Foundation released its first major update, Firefox version 1.5, on November 29, 2005. On October 24, 2006, Mozilla released Firefox 2. This version includes updates to the tabbed browsing
Features of Mozilla Firefox

The features of Mozilla Firefox distinguish it from other web browsers such as Internet Explorer. It lacks many features found in other browsers, in an effort to combat interface bloat and to allow the browser to be shipped as a small, pared-down core easily customizable to meet individual users' needs....
 environment, the extensions manager, the GUI
Gui

Gui or guee is a generic term to refer to grillinged dishes in Korean cuisine. These most commonly have meat or fish as their primary ingredient, but may in some cases also comprise grilled vegetables or other vegetarian ingredients....
, and the find, search and software update engines; a new session restore feature; inline spell checking; and an anti-phishing
Phishing

In the field of computer security, phishing is the criminally fraudulent process of attempting to acquire sensitive information such as usernames, passwords and credit card details by masquerading as a trustworthy entity in an electronic communication....
 feature which was implemented by Google
Google

Google Inc. is an United States public company, earning revenue from AdWords related to its Google search, Gmail, Google Maps, Google Apps, Orkut, and YouTube services as well as selling advertising-free versions of the Google Search Appliance....
 as an extension, and later merged into the program itself. In December 2007, was launched. It allows users to ask volunteers questions through a system powered by Jive Software, with guaranteed hours of operation and the possibility of help after hours.

Version 3.0


Mozilla Firefox 3 was released on June 17, 2008 by the Mozilla Corporation
Mozilla Corporation

The Mozilla Corporation is a wholly owned subsidiary of the Mozilla Foundation that coordinates and integrates the development of Internet-related application softwares such as the Mozilla Firefox web browser and the Mozilla Thunderbird email client by the growing global community of open-source developers, only some of whom are employed by...
. Firefox 3 uses version 1.9 of the Mozilla Gecko
Gecko (layout engine)

Gecko is a layout engine currently developed by Mozilla Corporation, known as the layout engine of the Mozilla Firefox web browser, Mozilla Application Suite, Nvu, Mozilla Thunderbird and many more....
 layout engine for displaying web pages. The new version fixes many bugs, improves standard compliance, and implements new web APIs. Other new features include a redesigned download manager, a new "Places" system for storing bookmarks and history, and separate themes
Theme (computing)

In computing, a theme is a preset package containing graphical appearance details, used to customize the look and feel of an operating system, widget set or window manager....
 for different operating systems. The current version is Firefox 3.0.7.

Development stretches back to the first Firefox 3 beta (under the codename 'Gran Paradiso') which had been released several months earlier on 19 November 2007, and was followed by several more beta releases in spring 2008 culminating in the June release.

Firefox had 21.53% of the recorded usage share of web browsers
Usage share of web browsers

Usage share, in web browser statistics, is the percentage of visitors to a group of web sites that use a particular browser. For example, when it is said that Internet Explorer has 67% usage share, it means Internet Explorer is used by 67% of visitors that visit a given set of sites....
 by January 2009, and Firefox 3 had over 8 million unique downloads the day it was released, setting a Guinness World Record
Guinness World Records

Guinness World Records, known until 2000 as The Guinness Book of Records , is a reference book published annually, containing an internationally recognized...
.

Future developments


The precursory releases of upcoming Firefox releases are codenamed "", as this is the name of the trunk
Trunk (software)

The trunk refers to the unnamed Branching of a file tree under revision control. The trunk is usually meant to be the base of a project on which development progresses....
 builds. Development for the 3.2 release takes place on the Mozilla trunk (mozilla-central), and pre-release versions are available based on the .

Version 3.5

After three initial beta releases under the Firefox 3.1 moniker, Mozilla developers have decided to change the numbering of this release to version 3.5, to reflect a significantly greater scope of changes than was originally planned.

Version 3.5, codenamed Shiretoko
Shiretoko National Park

covers most of the Shiretoko Peninsula at the northeastern tip of the island of Hokkaido, Japan.The word "Shiretoko" is an Ainu language word meaning List of Ainu terms#S....
, is planned to include support for the <video> and <audio> tags as defined in the HTML 5
HTML 5

HTML 5 is the fifth major revision of the core language of the World Wide Web, HTML. HTML 5 specifies two variants of the same language, a "classic" HTML variant known as HTML 5 and an XHTML variant known as XHTML 5....
 specification. The goal of Firefox's open-source in-browser video is to offer video playback without being encumbered by patent issues associated with so many video technologies.

Cross-site XMLHttpRequest
XMLHttpRequest

XMLHttpRequest is a Document Object Model Application programming interface that can be used inside a web browser scripting language, such as Javascript, to send an Hypertext Transfer Protocol directly to a web server and load the Response data directly back into the scripting language....
s (XHR), which would allow for more powerful web applications and an easier way to implement mashups, is also in planning. Native JSON
JSON

JSON , short for JavaScript Object Notation, is a lightweight computer data interchange format. It is a text-based, human-readable format for representing simple data structures and associative arrays ....
 DOM binding, a powerful feature for web developers, may also be included, together with full support. Firefox 3.5 will use the Gecko 1.9.1 engine, which includes a few features that were not included in the 3.0 release. Multi-touch
Multi-touch

Multi-touch denotes a set of interaction techniques which allow computer users to control graphical applications with several fingers.Multi-touch consists of a touch screen or touchpad, as well as software that recognizes multiple simultaneous touch points, as opposed to the standard touchscreen , which recognizes only one touch point....
 support will also be added to the release, including gesture support like pinching for zooming, swiping for back and forward and twisting for changing the tab.

The Alpha 1 was released in late July 2008. Alpha 2 was launched on September 6, 2008, adding new video support. TraceMonkey was added to enhance the speed of some JavaScript
JavaScript

JavaScript is a scripting language widely used for client-side web development. It was the originating Programming language dialect of the ECMAScript standard....
 computations, similar to the V8 JavaScript engine in Google Chrome. Beta 1 was released on October 14, 2008 and Beta 2 on December 8, 2008. Beta 2 includes a Private Browsing feature which, when active, does not store any data revealing a user's visited sites on the hard drive. Beta 3 was set to be released on March 2, 2009, it is now scheduled to be released on March 12, 2009.

Version 3.5 will also change the default search engine in Russian language
Russian language

Russian is the most geographically widespread language of Eurasia, the most widely spoken of the Slavic languages, and the largest native language in Europe....
 builds, using the popular Russian search engine Yandex
Yandex

Yandex is a Russian search engine and the largest Russian Web portal. Yandex was launched in 1997. Its name can be explained as "Yet Another iNDEXer" or "????????? Index"....
 rather than Google
Google

Google Inc. is an United States public company, earning revenue from AdWords related to its Google search, Gmail, Google Maps, Google Apps, Orkut, and YouTube services as well as selling advertising-free versions of the Google Search Appliance....
 after a survey of Russian Firefox users indicated they preferred Yandex.

Subsequent 3.x release

The release following Firefox 3.1 (since changed to Firefox 3.5) was originally referred to as 3.2. Since the change, Mozilla developer Mike Shaver has indicated that the release number will be referred to as 3.6 ad interim. The release date is not yet known. Development started on 1 December 2008. This release will use the Gecko 1.9.2 engine on the Mozilla 2 platform and include several interface improvements, such as new graphical tab-switching behavior, which was removed from 3.1 Beta 2.

Version 4.0

On October 13, 2006, Brendan Eich
Brendan Eich

Brendan Eich is a computer programmer and creator of the JavaScript programming language. He is the Chief Technology Officer at the Mozilla Corporation....
, Mozilla's Chief Technology Officer, wrote about the plans for Mozilla 2, the platform on which Firefox 4.0 is likely to be based. These changes include improving and removing XPCOM
XPCOM

XPCOM is a cross platform software componentry from Mozilla. It is similar to CORBA and Microsoft Component Object Model. It has multiple language bindings and Interface description language descriptions so programmers can plug their custom functionality into the framework and connect it with other components....
 APIs
Application programming interface

An application programming interface is a set of subroutine, data structures, class and/or Protocol provided by library and/or operating system Service s in order to support the building of applications....
, switching to standard C++
C++

C++ is a general-purpose programming language. It is regarded as a middle-level language, as it comprises a combination of both high-level programming language and low-level programming language language features....
 features, just-in-time compilation
Just-in-time compilation

In computing, just-in-time compilation , also known as dynamic translation, is a technique for improving the runtime performance of a computer program....
 with JavaScript
JavaScript

JavaScript is a scripting language widely used for client-side web development. It was the originating Programming language dialect of the ECMAScript standard....
 2 (known as the Tamarin
Tamarin (JavaScript engine)

Tamarin is a free software virtual machine and just-in-time compilation compiler intended to implement the fourth edition of the ECMAScript standard....
 project), and tool-time and runtime security checks. It has also been announced that support for the Gopher protocol will be removed by default to lessen attack vectors, but it has also been suggested that the protocol could be retained if someone were to implement Gopher support in a memory-safe programming language.

Future features

Mitchell Baker
Mitchell Baker

Winifred Mitchell Baker, better known simply as Mitchell Baker is the Chairperson of the Mozilla Foundation and Chairperson and former Chief Executive Officer of the Mozilla Corporation, a subsidiary of the Mozilla Foundation that coordinates development of the open source Mozilla Internet applications, including the Mozilla Firefox web...
, Mozilla's former Chief Executive Officer
Chief executive officer

A chief executive officer or chief executive is typically the highest-ranking Corporate title or Administration in charge of total management of a corporation, company, non-profit organization, or government agency, reporting to the board of directors....
, has spoken of the Mozilla Foundation's plans to create a version of Firefox, codenamed Fennec, that will run reliably on mobile phones, as well as a strategy for syncing content downloaded on a PC with mobile handsets.

Meanwhile, integral offline application support technology—similar to Gears
Gears (software)

Gears, formerly Google Gears, is software offered by Google that "enables more powerful web applications, by adding new features to your web browser." Released under the BSD licenses, Gears is free and open source software....
—is also being developed for Firefox. Baker has said that given the level of investment made in the web as a platform, taking applications to the next level will require that they continue to work when a computer is offline.

Release history

Browser name Gecko version Version Support status Codename Release date Significant changes
Phoenix 1.2 0.1 Pescadero
Pescadero, California

Pescadero is an unincorporated community in San Mateo County, California two miles east of State Route 1 and Pescadero State Beach. The center of town, on Pescadero Creek Road, is located at latitude 37.255 and longitude 122.38028....
September 23, 2002 First release; customizable toolbar, quicksearch, tabbed browsing.
0.2 Santa Cruz
Santa Cruz, California

Santa Cruz is the county seat and largest city of Santa Cruz County, California, California in the United States of America. As of the United States Census, 2000, Santa Cruz had a total population of 54,593....
October 1, 2002 Sidebar, extension management.
0.3 Lucia
Lucia, California

Lucia is an unincorporated area in Monterey County, California, USA. It is one of the three small settlements of gas stations, restaurants, and motels located along California State Route 1 on the Big Sur coast....
October 14, 2002 Image blocking, pop-up blocking whitelist.
1.3 0.4 Oceano
Oceano, California

Oceano is a census-designated place in San Luis Obispo County, California, California, United States. The population was 7,260 at the 2000 census....
October 19, 2002 Themes, pop-up blocking improvements, toolbar customization.
0.5 Naples
Naples, Long Beach, California

Naples is a neighborhood of Long Beach, California, California, United States built on a series of islands located in Alamitos Bay . Naples consists of three separate islands, divided by canals which open into the bay....
December 7, 2002 Multiple homepages, sidebar and accessibility improvements, history.
Mozilla Firebird 1.5 0.6 Glendale
Glendale, California

Glendale is a city in Los Angeles County, California, California, United States. It lies at the eastern end of the San Fernando Valley, is bisected by the Verdugo Mountains, and is a suburb in the Greater Los Angeles Area....
May 17, 2003 New default theme (Qute), bookmark and privacy improvements, smooth scrolling, automatic image resizing.
0.7 Indio
Indio, California

Indio is a city in Riverside County, California, California, United States, located in the Coachella Valley of Southern California's desert region....
October 15, 2003 Automatic scrolling, password manager, preferences panel improvements.
Mozilla Firefox 1.6 0.8 Royal Oak
Royal Oak, New Zealand

Royal Oak is a small suburb in New Zealand's largest city of Auckland, New Zealand. It is situated between the suburbs of Epsom and Onehunga ....
February 9, 2004 Windows installer, offline working, bookmarks and download manager improvements, rebranded with new logo.
1.7 0.9 One Tree Hill
One Tree Hill, New Zealand

One Tree Hill is a 182 metre volcanic peak located in Auckland, New Zealand. It is an important memorial place for both Maori and other New Zealanders....
June 15, 2004 New default theme (Winstripe), comprehensive data migration, new extension/theme manager, reduced download size, new help system, Linux installer, mail icon (Windows only).
1.0 Phoenix
Phoenix, Arizona

Phoenix is the capital and largest city in the U.S. state of Arizona, as well as the fifth most populous city in the United States. Phoenix is home to 1,552,259 residents, and is the anchor of the Phoenix Metropolitan Area with 4,179,427 residents....
November 9, 2004 Added new features such as RSS
RSS (file format)

RSS is a family of Web feed formats used to publish frequently updated works?such as blog entries, news headlines, audio, and video?in a standardized format....
/Atom
Atom (standard)

The name Atom applies to a pair of related standards. The Atom Syndication Format is an XML language used for web feeds, while the Atom Publishing Protocol is a simple []-based protocol for creating and updating web resources....
 feed support, find toolbar, plugin finder. Reached its end of life on April 13, 2006 with the release of version 1.0.8. (support for older versions of Firefox typically ends six months after a new major version is available).
1.8 1.5 Deer Park
Deer Park, New York

Deer Park is a political subdivisions of New York#Hamlet and census-designated place in Suffolk County, New York, New York, United States. The population was 28,316 at the 2000 census....
November 29, 2005 Added support for SVG
Scalable Vector Graphics

Scalable Vector Graphics is a family of specifications of XML-based file format for describing two-dimensional vector graphics, both static and dynamic ....
 and canvas
Canvas (HTML element)

The canvas HTML element is part of HTML5 and allows for dynamic Scripting language rendering of bitmap images.It was initially introduced by Apple Computer for use inside their own Mac OS X WebKit component, powering applications like Dashboard widgets and the Safari browser....
, UI adjustments and improvements in JavaScript 1.5 and CSS 2/3. Reached its end of life on May 30, 2007 with the release of Firefox 1.5.0.12.
Mozilla Firefox 2
Mozilla Firefox 2

Mozilla Firefox 2 is a version of Mozilla Firefox, a web browser released on October 24th 2006 by the Mozilla Corporation.Firefox 2 uses version 1.8 of the Gecko layout engine for displaying web pages....
1.8.1 2.0 Bon Echo
Bon Echo Provincial Park

Bon Echo Provincial Park is a List of Ontario Parks in South Central Ontario north of Kaladar, Ontario, approximately 6 kilometres north of Cloyne, Ontario....
October 24, 2006 Added new features such as session restoration after a browser crash, search suggestion for Google and Yahoo!, new search plugin manager and add-on manager, web feed previewing, bookmark microsummaries and anti-phishing
Phishing

In the field of computer security, phishing is the criminally fraudulent process of attempting to acquire sensitive information such as usernames, passwords and credit card details by masquerading as a trustworthy entity in an electronic communication....
 protection. Winstripe theme refresh. Included support for JavaScript 1.7. Reached its end of life on December 18, 2008 with the release of Firefox 2.0.0.20.
Mozilla Firefox 3
Mozilla Firefox 3

Mozilla Firefox 3 is a version of Mozilla Firefox, a web browser released on June 17, 2008 by the Mozilla Corporation. Firefox 3 uses version 1.9 of the Gecko layout engine for displaying web pages....
1.9 3.0 Gran Paradiso
Gran Paradiso

The Gran Paradiso , the 7th highest mountain in the Graian Alps with Mont Blanc being the highest, is located between the Aosta Valley and Piedmont, regions of north-west Italy....
June 17, 2008 Cairo
Cairo (graphics)

cairo is a software library used to provide a vector graphics-based, device-independent Application programming interface for software developers....
 used as a graphics backend. Cocoa
Cocoa (API)

Cocoa is one of Apple Inc.'s native object-oriented application program environment for the Mac OS X operating system. It is one of four major Application programming interfaces available for Mac OS X; the others are Carbon , POSIX , and Java platform....
 Widgets included in OS X builds. APIs implemented from WHATWG specs. Changes to how DOM events are dispatched, how HTML object elements are loaded, and how web pages are rendered. New SVG elements and filters, and improved SVG specification compliance. Acid2
Acid2

Acid2 is a test page published and promoted by the Web Standards Project to expose web page rendering flaws in web browsers and other applications that render HTML....
 test compliant. New UI improvements, including default themes for different operating systems and new download manager. Windows 95
Windows 95

Windows 95 is a consumer-oriented graphical user interface-based operating system. It was released on August 24, 1995 by Microsoft, and was a significant progression from the company's previous Microsoft Windows products....
, 98
Windows 98

Windows 98 is a graphical operating system released on 25 June 1998 by Microsoft and the successor to Windows 95. Like its predecessor, it is a hybrid 16-bit application/32-bit application monolithic product based on MS-DOS....
, ME
Windows Me

Windows Millennium Edition, or Windows Me , is a hybrid 16-bit/32-bit graphical operating system released on 14 September 2000 by Microsoft....
, Mac OS X v10.3.9
Mac OS X v10.3

Mac OS X version 10.3 ?Panther? was the fourth Software version of Mac OS X, Apple Inc. desktop and server operating system. It followed Mac OS X v10.2 ?Jaguar? and preceded Mac OS X v10.4 ?Tiger?....
 and lower, and GTK+
GTK+

GTK+, or The GIMP Toolkit, is a cross-platform widget toolkit for creating graphical user interfaces. It is one of the most popular toolkits for the X Window System, along with Qt ....
 2.8 and lower are no longer supported. Addons.mozilla.org integration in the Add-ons window. Support for APNG
APNG

The Animated Portable Network Graphics file format is an unofficial extension to the Portable Network Graphics specification. It allows for computer animation PNG files that work similarly to animated Graphics Interchange Format files, while supporting 24-bit images and 8-bit transparency not available for GIFs....
 files.
3.0.7   March 4, 2009 Security and stability update.
1.9.1 3.1b2 Shiretoko
Shiretoko National Park

covers most of the Shiretoko Peninsula at the northeastern tip of the island of Hokkaido, Japan.The word "Shiretoko" is an Ainu language word meaning List of Ainu terms#S....
December 8, 2008 Web standards improvements in the Gecko layout engine. Text API for the element. Support for using border images. Support for JavaScript query selectors. Several improvements to the Smart Location Bar. Private browsing mode.
1.9.2 3.2a1pre Minefield December 1, 2008 Pre-Alpha Version. A new tab switching behavior.
Mozilla Firefox 42.0.04.0    


Features

Features included with Firefox are tabbed browsing
Tabbed browsing

Tabbed browsing refers to use of internet browsers which allow multiple tabs to be opened within the window the browser is open in, each tab displaying a web-page....
, spell checker
Spell checker

In computing, a spell checker is an application software that flags words in a document that may not be spelling correctly. Spell checkers may be stand-alone capable of operating on a block of text, or as part of a larger application, such as a word processor, email client, electronic dictionary, or search engine....
, incremental find
Incremental find

In computing, incremental find is a user interface interaction method to progressively search for and filter through text. As the user types text, one or more possible matches for the text are found and immediately presented to the user....
, live bookmarking
Features of Mozilla Firefox

The features of Mozilla Firefox distinguish it from other web browsers such as Internet Explorer. It lacks many features found in other browsers, in an effort to combat interface bloat and to allow the browser to be shipped as a small, pared-down core easily customizable to meet individual users' needs....
, an integrated download manager
Download manager

A download manager is a computer program dedicated to the task of Uploading and downloading possibly unrelated stand-alone files from the Internet for storage....
, keyboard shortcuts, and an integrated search system that uses the user's desired search engine
Web search engine

A Web search engine is a tool designed to search for information on the World Wide Web. The search results are usually presented in a list and are commonly called hits....
.

The developers of Firefox aimed to produce a browser that "just surfs the web" and delivers the "best possible browsing experience to the widest possible set of people."

Users can customize Firefox with extensions and themes. Mozilla maintains an add-on repository at [https://addons.mozilla.org/en-US/firefox/ addons.mozilla.org] with nearly 6500 add-ons in it as of December 2008.

Firefox provides an environment for web developers in which they can use built-in tools, such as the Error Console or the DOM Inspector
DOM Inspector

DOM Inspector is one of the web developer tools included in Mozilla Application Suite as well as versions of Mozilla Firefox prior to Version 3....
, or extensions, such as Firebug
Firebug (Firefox extension)

The Firebug extension for Mozilla Firefox allows the debugging, editing, and monitoring of any website's CSS, HTML, Document Object Model, and JavaScript, and provides other Web development....
.

Standards

Mozilla Firefox implements many web standards
Web standards

Web standards is a general term for the formal Internet standards and other technical specifications that define and describe aspects of the World Wide Web....
, including HTML
HTML

HTML, an Acronym and initialism of HyperText Markup Language, is the predominant markup language for Web pages. It provides a means to describe the structure of text-based information in a document?by denoting certain text as links, headings, paragraphs, lists, and so on?and to supplement that text with interactive forms, embedded '...
, XML, XHTML
XHTML

The Extensible Hypertext Markup Language, or XHTML, is a markup language that has the same depth of expression as HTML, but also conforms to XML syntax....
, SVG
Scalable Vector Graphics

Scalable Vector Graphics is a family of specifications of XML-based file format for describing two-dimensional vector graphics, both static and dynamic ....
 1.1 (partial), CSS
Cascading Style Sheets

Cascading Style Sheets is a stylesheet language used to describe the presentation of a document written in a markup language. Its most common application is to style web pages written in HTML and XHTML, but the language can be applied to any kind of XML document, including Scalable Vector Graphics and XUL....
 (with extensions), ECMAScript
ECMAScript

ECMAScript is a scripting language, standardized by Ecma International in the ECMA-262 Specification . The language is widely used on the World Wide Web, and is often confused with JavaScript or JScript, the two major Programming language dialect from which ECMAScript was standardized....
 (JavaScript
JavaScript

JavaScript is a scripting language widely used for client-side web development. It was the originating Programming language dialect of the ECMAScript standard....
), DOM
Document Object Model

The Document Object Model is a platform- and programming language-independent standard object model for representing HTML or XML documents as well as an Application Programming Interface for querying, traversing and manipulating such documents....
, MathML
MathML

Mathematical Markup Language is an application of XML for describing mathematics notations and capturing both its structure and content. It aims at integrating mathematical formulae into World Wide Web documents....
, DTD
Document Type Definition

Document Type Definition is one of several SGML and XML schema languages, and is also the term used to describe a document or portion thereof that is authored in the DTD language....
, XSLT
XSL Transformations

Extensible Stylesheet Language Transformations is an XML-based language used for the XML transformation language into other XML or "human-readable" documents....
, XPath
XPath

XPath is a language for selecting nodes from an XML document. In addition, XPath may be used to compute values from the content of an XML document....
, and (animated) PNG images with alpha transparency. Firefox also implements standards proposals created by the WHATWG such as client-side storage, and canvas element
Canvas (HTML element)

The canvas HTML element is part of HTML5 and allows for dynamic Scripting language rendering of bitmap images.It was initially introduced by Apple Computer for use inside their own Mac OS X WebKit component, powering applications like Dashboard widgets and the Safari browser....
.

Firefox passes the Acid2
Acid2

Acid2 is a test page published and promoted by the Web Standards Project to expose web page rendering flaws in web browsers and other applications that render HTML....
 standards-compliance test from version 3.0. Like all other stable browsers , Firefox 3.0 does not pass the Acid3
Acid3

Acid3 is a test page from the Web Standards Project that checks how well a web browser follows certain web standards, especially relating to the Document Object Model and JavaScript....
 test; it scores 71/100 and does not render the image correctly. Firefox 3.1 scores 93/100, renders the image correctly except for using the wrong favicon
Favicon

A favicon , also known as a website icon, shortcut icon, url icon, or bookmark icon is a 16x16 pixel square icon associated with a particular website or webpage....
, and does not pass the performance aspect of Acid3.

Firefox also implements a proprietary protocol from Google called "safebrowsing" (used to exchange data related with "phishing and malware protection"), which is not an open standard
Open standard

An open standard is a standard that is publicly available and has various rights to use associated with it, and various properties of how it was designed....
. It is in direct contradiction with Mozilla Manifesto, an often cited document in Mozilla marketing efforts.

Security

Firefox uses a sandbox security model
Sandbox (computer security)

In computer security, a sandbox is a security mechanism for safely running programs. It is often used to execute untested code, or untrusted programs from unverified third-parties, suppliers and untrusted users....
, and limits scripts from accessing data from other web sites based on the same origin policy
Same origin policy

In computing, the same origin policy is an important computer security concept for a number of client-side scripting, such as JavaScript. In a nutshell, the policy permits scripts running on pages originating from the same site to access each other's methods and properties with no specific restrictions — but prevents access to most meth...
. It uses SSL/TLS to protect communications with web servers using strong cryptography
Cryptography

Cryptography is the practice and study of hiding information. In modern times cryptography is considered a branch of both mathematics and computer science and is affiliated closely with information theory, computer security and engineering....
 when using the https
Https

Hypertext Transfer Protocol Secure is a combination of the Hypertext Transfer Protocol and a secure communication protocol.HTTP operates at the highest layer of the TCP/IP model, the Application layer; but the security protocol operates at lower sublayer, encrypting an HTTP message prior to transmission and decrypting a message upon arriva...
 protocol. It also provides support for web applications to use smartcards
Smart card

A smart card, chip card, or integrated circuit card , is in any pocket-sized card with embedded integrated circuits which can process data....
 for authentication purposes.

The Mozilla Foundation offers a "bug bounty" to researchers who discover severe security holes in Firefox. Official guidelines for handling security vulnerabilities discourage early disclosure of vulnerabilities
Full disclosure

In computer security, full disclosure means to disclose all the details of a security problem which are known. It is a philosophy of security management completely opposed to the idea of security through obscurity....
 so as not to give potential attackers an advantage in creating exploits.

Because Firefox has fewer and less severe publicly known unpatched security vulnerabilities than Internet Explorer
Internet Explorer

Windows Internet Explorer , commonly abbreviated to IE, is a series of graphical user interface web browsers developed by Microsoft and included as part of the Microsoft Windows line of operating systems starting in 1995....
 (see Comparison of web browsers
Comparison of web browsers

The following tables compare general and technical information for a number of web browsers. Please see the individual products' articles for further information....
), improved security is often cited as a reason to switch from Internet Explorer to Firefox. The Washington Post
The Washington Post

The Washington Post is the newspaper with the largest circulation in Washington, D.C., United States and is the city's oldest paper, founded in 1877....
 reports that exploit code for critical unpatched security vulnerabilities in Internet Explorer was available for 284 days in 2006. In comparison, exploit code for critical security vulnerabilities in Firefox was available for 9 days before Mozilla shipped a patch to remedy the problem.

A 2006 Symantec
Symantec

Symantec Corporation , founded in 1982, is an international corporation which sells computer software, particularly in the realms of Computer security and information management....
 study showed that although Firefox had surpassed other browsers in the number of vendor-confirmed vulnerabilities that year through September, these vulnerabilities were patched far more quickly than those found in other browsers. Symantec later clarified their statement, saying that Firefox still had fewer security vulnerabilities than Internet Explorer, as counted by security researchers. As of December 10, 2008, Firefox 3 has one security vulnerability unpatched according to Secunia
Secunia

Secunia is a Danish computer security service provider best known for tracking Vulnerability in more than 12,400 pieces of Computer software and operating systems....
. Internet Explorer 7 has ten security vulnerabilities unpatched, the most severe of which was rated "extremely critical" by Secunia.

Licensing

Firefox is free
Free software

Free Software or software libre is software that can be used, studied, and modified without restriction, and which can be copied and redistributed in modified or unmodified form either without restriction, or with minimal restrictions only to ensure that further recipients can also do these things and to prevent consumer-facing hardware...
 and open source software, and is tri-licensed under the Mozilla Public License
Mozilla Public License

The Mozilla Public License is a free software and open source software license. Version 1.0 was developed by Mitchell Baker when she worked as a lawyer at Netscape Communications Corporation and version 1.1 at the Mozilla Foundation....
 (MPL), GNU General Public License
GNU General Public License

The GNU General Public License is a widely used free software license, originally written by Richard Stallman for the GNU project. The GPL is the most popular and well-known example of the type of strong copyleft license that requires derived works to be available under the same copyleft....
 (GPL), and the GNU Lesser General Public License
GNU Lesser General Public License

The GNU Lesser General Public License or LGPL is a free software license published by the Free Software Foundation . It was designed as a compromise between the strong-copyleft GNU General Public License and permissive licenses such as the BSD licenses and the MIT License....
 (LGPL). These licenses permit anyone to view, modify and/or redistribute the source code, and several publicly released applications have been built on it; for example, Netscape
Netscape (web browser)

Netscape 7 was a series of proprietary software cross-platform Internet suites created by Netscape Communications Corporation and then in-house by America Online to continue the Netscape series after Netscape 6....
, Flock
Flock (web browser)

Flock is a web browser built on Mozilla Firefox codebase that tends to specialize in providing Social network service and Web 2.0 facilities built into its user interface....
, Miro, and Songbird
Songbird (software)

Songbird is a free-software media player and web browser developed as open source by a group known as Pioneers of the Inevitable , with a stated mission "to incubate Songbird, the first Web player, to catalyze and champion a diverse, open Media Web."...
 make use of code from Firefox.

The official end-user builds of Firefox distributed from mozilla.com are licensed under the Mozilla End User License Agreement (EULA). Several elements do not fall under the scope of the tri-license and have their use restricted by the EULA, including the trademarked Firefox name, the proprietary artwork, and the proprietary
Proprietary software

Proprietary software is a term coined by advocates of the free software movement to describe computer software which is the legal property of one party....
 closed-source Talkback
Crash reporter

A crash reporter is an application software whose function is to report crash data to a third party, usually to the party responsible for the crashed program....
 crash reporter in Firefox version prior to 3
Mozilla Firefox 3

Mozilla Firefox 3 is a version of Mozilla Firefox, a web browser released on June 17, 2008 by the Mozilla Corporation. Firefox 3 uses version 1.9 of the Gecko layout engine for displaying web pages....
. Because of this and the clickwrap
Clickwrap

A clickwrap agreement is a common type of agreement . Such forms of agreement are mostly found on the Internet, as part of the installation process of many software packages, or in other circumstances where agreement is sought using electronic media....
 agreement included in the Windows version, the Free Software Foundation
Free Software Foundation

The Free Software Foundation is a non-profit corporation founded by Richard Stallman on 4 October 1985 to support the free software movement, a copyleft-based movement which aims to promote the universal freedom to distribute and modify computer software without restriction....
 (FSF) consider these builds proprietary software
Proprietary software

Proprietary software is a term coined by advocates of the free software movement to describe computer software which is the legal property of one party....
. However, BreakPad, an open source crash reporting system, has replaced Talkback in Firefox 3.0.

In the past, Firefox was licensed solely under the MPL, which the FSF criticizes for being weak copyleft
Copyleft

File:Copyleft.svgCopyleft is a Word play on the word copyright to describe the practice of using copyright law to remove restrictions on distributing copies and modified versions of a work for others and requiring that the same freedoms be preserved in modified versions....
; the license permits, in limited ways, proprietary derivative works. Additionally, code under the MPL cannot legally be linked with code under the GPL or the LGPL. To address these concerns, Mozilla re-licensed Firefox under the tri-license scheme of MPL, GPL, and LGPL. Since the re-licensing, developers have been free to choose the license under which they will receive the code, to suit their intended use: GPL or LGPL linking and derivative works when one of those licenses is chosen, or MPL use (including the possibility of proprietary derivative works) if they choose the MPL.

Trademark and logo issues

The name "Mozilla Firefox" is a registered trademark
TradeMark

TradeMark is a tall, primarily residential, skyscraper in Charlotte, North Carolina. It was completed in 2007 and has 28 floors. There are 200 hundred residential units....
; along with the official Firefox logo, it may only be used under certain terms and conditions. Anyone may redistribute the official binaries in unmodified form and use the Firefox name and branding for such distribution, but restrictions are placed on distributions which modify the underlying source code.

Mozilla not only forbids creating derivative works from Firefox logo (i.e. modifying it), but also strongly discourages creating independent, but similar logos.

There has been some controversy over the Mozilla Foundation's intentions in stopping certain open source distributions from using the "Firefox" trademark. Former Mozilla CEO Mitchell Baker
Mitchell Baker

Winifred Mitchell Baker, better known simply as Mitchell Baker is the Chairperson of the Mozilla Foundation and Chairperson and former Chief Executive Officer of the Mozilla Corporation, a subsidiary of the Mozilla Foundation that coordinates development of the open source Mozilla Internet applications, including the Mozilla Firefox web...
 explained in an interview in 2007 that distributions could freely use the Firefox trademark if they did not modify source-code, and that the Mozilla Foundation's only concern was with users getting a consistent experience when they used "Firefox".

To allow distributions of the code without using the official branding, the Firefox source code
Source code

In computer science, source code is any collection of statements or declarations written in some human-readable computer programming language....
 contains a "branding switch". This switch allows the code to be compiled without the official logo and name, for example to produce a derivative work unencumbered by restrictions on the Firefox trademark (this is also often used for alphas of future Firefox versions). In the unbranded compilation the trademarked logo and name are replaced with a freely distributable generic globe logo and the name of the release series from which the modified version was derived. The name "Deer Park" is used for derivatives of Firefox 1.5, "Bon Echo" for derivatives of Firefox 2.0, and "Gran Paradiso" is used for derivatives of Firefox 3.0. The codename Minefield and a modified version of the generic logo stylized to look like a bomb is used for unofficial builds of version 3.0 and later, and for nightly builds of the trunk.

Distributing modified versions of Firefox under the "Firefox" name requires explicit approval from Mozilla for the changes made to the underlying code, and requires the use of all of the official branding. For example, it is not permissible to use the name "Firefox" without also using the official logo. When the Debian
Debian

Debian GNU/Linux is one of the most popular and influential computer operating systems composed of free software and open source software....
 project decided to stop using the official Firefox logo in 2006 (because of copyright restrictions on its use incompatible with the project's guidelines
Debian Free Software Guidelines

The Debian Free Software Guidelines is a set of guidelines that the Debian Project uses to determine whether a software license is a free software license, which in turn is used to determine whether a piece of software can be included in Debian....
), they were told by a representative of the Mozilla Foundation that this was not acceptable, and were asked either to comply with the published trademark guidelines or cease using the "Firefox" name in their distribution. Ultimately, Debian switched to branding their modified version of Firefox "Iceweasel", along with other Mozilla software.

Advertising

The rapid adoption of Firefox, 100 million downloads in its first year of availability, followed a series of aggressive marketing campaigns starting in 2004 with a series of events Blake Ross
Blake Ross

Blake Aaron Ross is an United States software developer who is known for his work on the Mozilla web browser; in particular, he started the Mozilla Firefox project with Dave Hyatt, as well as the Spread Firefox project with Asa Dotzler while working as a contractor at the Mozilla Foundation....
 and Asa Dotzler
Asa Dotzler

Asa Dotzler , born in Summertown, Tennessee on June 5, 1974, is best known for his work as community coordinator for several Mozilla projects. He was founder of Mozilla?s Quality control and Testing Program, which grew under his leadership from just a few contributors when Dotzler joined the project to tens of thousands of volunteers today....
 called "marketing weeks".

On September 12, 2004, a marketing portal dubbed "Spread Firefox" (SFX) debuted along with the Firefox Preview Release, creating a centralized space for the discussion of various marketing techniques. The portal enhanced the "Get Firefox" button program, giving users "referrer points" as an incentive. The site lists the top 250 referrers. From time to time, the SFX team or SFX members launch marketing events organized at the Spread Firefox website. As a part of the Spread Firefox campaign, there is an attempt to break the world download record with the release of Firefox 3. The idea is to have the newest version downloaded by as many people as possible within a 24 hour time period.

The "World Firefox Day" campaign started on July 15, 2006, the third anniversary of the founding of the Mozilla Foundation
Mozilla Foundation

The Mozilla Foundation is a non-profit organization that exists to support and provide leadership for the open source Mozilla project. The organization sets the policies that govern development, operate key infrastructure and control trademarks and other intellectual property....
, and ran until September 15, 2006. Participants registered themselves and a friend on the website for nomination to have their names displayed on the Firefox Friends Wall, a digital wall that will be displayed at the headquarters of the Mozilla Foundation.

On February 21, 2008 in honor of reaching 500 million downloads, the Firefox community celebrated by visiting FreeRice
FreeRice

FreeRice is a website where users play various educational, multiple-choice games in order to raise money to fight malnutrition. The games include English vocabulary , multiplication tables, pre-algebra, chemistry , English grammar, basic foreign language vocabulary for English speakers , geography , and art....
 to earn 500 million grains of rice.

Some of Firefox's contributors made a crop circle
Crop circle

Crop circles are patterns created by the flattening of Crop such as wheat, barley, rapeseed , rye, maize, linseed and soy.The term was first used by researcher Colin Andrews to describe simple circles he was researching....
 of the Firefox logo, which can be seen on Google Earth
Google Earth

Google Earth is a virtual globe, map and geographic information program that was originally called Earth Viewer, and was created by Keyhole, Inc, a company acquired by Google in 2004....
 at coordinates .

Market adoption

browsers):
]]
Firefox market share by version
— NetApplications.com, February 2009
Firefox 1.0.x 0.08%
Firefox 1.5.0.x 0.18%
Firefox 2.0.0.x 2.27%
Firefox 3.0.x 19.07%
Firefox 3.1.x 0.09%
All versions 21.73%


Mozilla Firefox's market share has grown for each growth period since inception, mostly at the expense of Internet Explorer; Internet Explorer has seen a steady decline of its usage share since Firefox's release. By early 2008, Firefox had approximately 15% global usage share of web browsers. Market shares break down as following: 43% for Internet Explorer 7
Internet Explorer 7

Windows Internet Explorer 7 is a web browser released by Microsoft in October 2006. Internet Explorer 7 is part of a long line of versions of Internet Explorer and was the first major update to the browser in more than 5 years....
, 32% for Internet Explorer 6
Internet Explorer 6

Microsoft Internet Explorer 6 , is a graphical user interface web browser developed by Microsoft and included as part of the Microsoft Windows XP and Windows Server 2003 lines of operating systems....
, 16% for Firefox 2.0, 4% for Safari 3.0
Safari (web browser)

Safari is a web browser developed by Apple Inc.. First released as a beta on January 7, 2003 on the company's Mac OS X operating system, it became Apple's default browser beginning with Mac OS X v10.3, commonly known as "OS X Panther." Apple has also made Safari the native browser for the iPhone OS....
, and less than half a percent for both Firefox 1.x and Internet Explorer 5
Internet Explorer 5

Microsoft Internet Explorer 5 is a graphical web browser released in March 1999 by Microsoft, primarily for Microsoft Windows, but initially with versions available for Apple Macintosh, Sun Microsystems Solaris , and HP-UX....
.x versions.

Downloads have continued at an increasing rate since Firefox 1.0 was released in November 2004, and as of February 21, 2008 Firefox has been downloaded over 500 million times. This number does not include downloads using software updates or those from third-party websites. They do not represent a user count, as one download may be installed on many machines, one person may download the software multiple times, or the software may be obtained from a third party. According to Mozilla CEO John Lilly, Firefox had about 140 million users as of February 2008.

Critical reaction

Forbes.com called Firefox the best browser in a 2004 commentary piece, and PC World
PC World (magazine)

PC World is a global computer magazine published monthly by IDG. It offers advice on various aspects of PCs and related items, the Internet, and other personal-technology products and services....
 named Firefox "Product of the Year" in 2005 on their "100 Best Products of 2005" list. After the release of Firefox 2 and Internet Explorer 7
Internet Explorer 7

Windows Internet Explorer 7 is a web browser released by Microsoft in October 2006. Internet Explorer 7 is part of a long line of versions of Internet Explorer and was the first major update to the browser in more than 5 years....
 in 2006, PC World reviewed both and declared that Firefox was the better browser. Which?
Which?

Which? is a product-testing and campaigning Charitable organization with a magazine and website run by Which? Ltd . Based in the United Kingdom, it engages in advocacy campaigns on various consumer protection issues and aims to promote informed consumer choice in the purchase of goods and services, by testing products, highlighting inferi...
 Magazine named Firefox its "Best Buy" web browser. In 2008, CNET.com compared Safari, Chrome, Firefox, and Internet Explorer in their "Battle of the Browsers" in terms of performance, security, and features, where Firefox won top honors.

Performance

In December 2005 Internet Week ran an article in which many readers reported high memory usage in Firefox 1.5. Mozilla developers said that the higher memory use of Firefox 1.5 was at least partially due to the new fast backwards-and-forwards (FastBack) feature. Other known causes of memory problems were malfunctioning extensions such as Google Toolbar
Google Toolbar

Google Toolbar is an Internet web browser toolbar available for Internet Explorer and Mozilla Firefox....
 and some older versions of Adblock
Adblock

Adblock is a content-filtering List of Firefox extensions for the Mozilla Firefox- and Mozilla Application Suite-based web browsers. Adblock allows users to prevent page elements, such as online advertising, from being downloaded and displayed....
, or plug-ins, such as older versions of Adobe Acrobat Reader. When PC Magazine compared memory usage of Firefox, Opera
Opera (web browser)

Opera is a web browser and Internet suite developed by the Opera Software company. Opera handles common Internet-related tasks such as displaying web sites, sending and receiving e-mail messages, managing contacts, IRC online chatting, downloading files via BitTorrent , and reading web feeds....
 and Internet Explorer, they found that Firefox used approximately as much memory as the other two browsers.

Softpedia
Softpedia

Softpedia is a site that indexes information and provides downloads for many games, drivers, mobile phones, and software for the Windows, Macintosh, and Linux platforms, as well as Personal digital assistant and other devices....
 also noted that Firefox 1.5 took longer to start up than other browsers, which was confirmed by browser speed tests. IE 6 launches faster than Firefox 1.5 on Microsoft Windows since many of its components are built into Windows and are loaded during system startup. As a workaround for the issue, a preloader application was created that loads components of Firefox on startup, similar to Internet Explorer. A Windows Vista
Windows Vista

Windows Vista is one member in a family of operating systems developed by Microsoft for use on personal computers, including home and business Desktop computer, laptops, Tablet PCs, and media center PCs....
 feature called SuperFetch performs a similar task of preloading Firefox if it is used often enough.

Tests performed by PC World
PC World (magazine)

PC World is a global computer magazine published monthly by IDG. It offers advice on various aspects of PCs and related items, the Internet, and other personal-technology products and services....
 and Zimbra indicate that Firefox 2 uses less memory than Internet Explorer 7. Firefox 3 uses less memory than Internet Explorer, Opera, Safari, and Firefox 2 in tests performed by Mozilla, CyberNet, and The Browser World.

Relationship with Google

The Mozilla Corporation's relationship with Google
Google

Google Inc. is an United States public company, earning revenue from AdWords related to its Google search, Gmail, Google Maps, Google Apps, Orkut, and YouTube services as well as selling advertising-free versions of the Google Search Appliance....
 has been noted in the media, especially with regard to their paid referral agreement. The release of the anti-phishing
Phishing

In the field of computer security, phishing is the criminally fraudulent process of attempting to acquire sensitive information such as usernames, passwords and credit card details by masquerading as a trustworthy entity in an electronic communication....
 protection in Firefox 2 in particular raised considerable controversy: anti-phishing protection enabled by default is based on a list updated by twice-hourly downloads to the user's computer from Google's server. The user cannot change the data provider within the GUI, and is not informed who the default data provider is. The browser also sends Google's cookie
HTTP cookie

HTTP cookies, more commonly referred to as World Wide Web cookies, tracking cookies or just cookies, are parcels of text sent by a Web server to a Web Client and then sent back unchanged by the client each time it accesses that server....
 with each update request. An additional, explicitly opt-in security feature has been added to recent builds by the Mozilla Foundation. This anti-phishing
Phishing

In the field of computer security, phishing is the criminally fraudulent process of attempting to acquire sensitive information such as usernames, passwords and credit card details by masquerading as a trustworthy entity in an electronic communication....
 feature provides live protection by checking each visited URL
Uniform Resource Locator

In Information technology, a Uniform Resource Locator is a type of Uniform Resource Identifier that specifies where an identified resource is available and the mechanism for retrieving it....
 with Google. Some Internet privacy
Internet privacy

Internet privacy consists of privacy over the media of the Internet: the ability to control what information one reveals about oneself over the Internet, and to control who can access that information....
 advocacy groups have expressed concerns surrounding Google's possible uses of this data, especially that Firefox's privacy policy states that Google may share information gathered with "safebrowsing" service with third parties, including business partners.

In 2005, the Mozilla Foundation and Mozilla Corporation had a combined revenue of US$
United States dollar

The United States dollar is the unit of currency of the United States and was defined by the Coinage Act of 1792 to be between 371 and 416 grains of silver ....
52.9 million, with approximately 95 percent derived from search engine royalties. In 2006, the Mozilla Foundation and Mozilla Corporation had a combined revenue of US$66.9 million, with approximately 90 percent derived from search engine royalties. In 2007, the Mozilla Foundation and Mozilla Corporation had a combined revenue of US$75 million, with 88 percent of this sum (US$66 million) from Google. Mozilla Foundation is being audited by the IRS
Internal Revenue Service

The Internal Revenue Service is the Federal government of the United States agency that collects taxes and enforces the tax law. It is an agency within the U.S....
 and some believe its non-profit status may be called into question.

Response from Microsoft

Microsoft's head of Australian operations, Steve Vamos, stated in late 2004 that he did not see Firefox as a threat and that there was not significant demand for the feature set of Firefox among Microsoft's users. Microsoft Chairman Bill Gates
Bill Gates

William Henry "Bill" Gates III is an United States business magnate, philanthropist, author, the List of the 100 wealthiest people , and chairman of the board of Microsoft, the software company he founded with Paul Allen....
 has used Firefox, but has commented that "so much software gets downloaded all the time, but do people actually use it?"

A Microsoft SEC
United States Securities and Exchange Commission

The U.S. Securities and Exchange Commission is an Independent agencies of the United States government which holds primary responsibility for enforcing the federal securities laws and regulating the security industry, the nation's stock and options exchanges, and other electronic securities markets....
 filing on June 30, 2005 acknowledged that "competitors such as Mozilla offer software that competes with the Internet Explorer Web browsing capabilities of our Windows operating system products." The release of Internet Explorer 7 was fast tracked, and included functionality that was previously available in Firefox and other browsers, such as tabbed browsing and RSS feeds.

Despite the cold reception from Microsoft's top management, the Internet Explorer development team maintains a relationship with Mozilla. They meet regularly to discuss web standards such as extended validation certificates. In 2005 Mozilla agreed to allow Microsoft to use its Web feed
Web feed

A web feed is a data format used for providing users with frequently updated content. Content distributors syndicate a web feed, thereby allowing users to subscribe to it....
 logo in the interest of common graphical representation of the Web feeds feature.

In August 2006, Microsoft offered to help Mozilla integrate Firefox with the then-forthcoming Windows Vista
Windows Vista

Windows Vista is one member in a family of operating systems developed by Microsoft for use on personal computers, including home and business Desktop computer, laptops, Tablet PCs, and media center PCs....
, which Mozilla accepted.

In October 2006, as congratulations for a successful ship of Firefox 2, the Internet Explorer 7 development team sent a cake to Mozilla. As a nod to the browser wars
Browser wars

The term "browser wars" refers to the competition for dominance in the web browser marketplace. The term is used to denote two specific periods of time: the competition between market-dominating Netscape Navigator and its eventual defeat by Microsoft Internet Explorer during the late 1990s, and the competition from 2003 onwards between the d...
, some readers joked about the cake being poisoned, while others jokingly suggested that Mozilla send a cake back along with the recipe, in reference to the open-source software
Open-source software

Open source software is defined as computer software for which the source code and certain other rights normally reserved for copyright holders are provided under a computer software license that meets the Open Source Definition or that is in the public domain....
 movement. The IE development team sent another cake on June 17, 2008, upon the successful release of Firefox 3.

In November 2007, Microsoft employee Jeff Jones criticized Firefox, claiming that Internet Explorer experienced fewer vulnerabilities and fewer higher severity vulnerabilities than Firefox in typical enterprise scenarios. Mozilla developer Mike Shaver
Mike Shaver

Mike Shaver is the VP Engineering for the Mozilla Corporation. He is known for his work on several other open source projects as well. He has been involved in the development of many of the technologies that enable interactive web pages, such as the JavaScript language....
 discounted the study, citing Microsoft's bundling of security fixes and the study's focus on fixes, rather than vulnerabilities, as crucial flaws.

Vulnerability statistics

Firefox security vulnerabilities have been patched relatively quickly. Symantec
Symantec

Symantec Corporation , founded in 1982, is an international corporation which sells computer software, particularly in the realms of Computer security and information management....
's , based on data from the first half of 2006, reported that while Firefox had more vulnerabilities than Internet Explorer during that time period (47 vs. 38), Firefox's vulnerabilities were fixed on average one day after the exploit code was made available, as compared to nine days for Internet Explorer.

Some have speculated that as Firefox becomes more popular, more vulnerabilities will be found, a claim that Mitchell Baker
Mitchell Baker

Winifred Mitchell Baker, better known simply as Mitchell Baker is the Chairperson of the Mozilla Foundation and Chairperson and former Chief Executive Officer of the Mozilla Corporation, a subsidiary of the Mozilla Foundation that coordinates development of the open source Mozilla Internet applications, including the Mozilla Firefox web...
, president of the Mozilla Foundation, has denied: "There is this idea that market share alone will make you have more vulnerabilities. It is not relational at all."

Expert and media coverage

The United States Computer Emergency Readiness Team
United States Computer Emergency Readiness Team

The United States Computer Emergency Readiness Team is part of the National Cyber Security Division of the United States's United States Department of Homeland Security....
 (US-CERT) stated in Oct 2004 that Internet Explorer's design makes it very difficult to secure. In contrast, almost none of their concerns apply to Firefox.
There are a number of significant vulnerabilities in technologies relating to the IE domain/zone security model, local file system (Local Machine Zone) trust, the Dynamic HTML (DHTML) document object model (in particular, proprietary DHTML features), the HTML Help system, MIME type determination, the graphical user interface (GUI), and ActiveX… IE is integrated into Windows to such an extent that vulnerabilities in IE frequently provide an attacker significant access to the operating system.


Some security experts, including Bruce Schneier
Bruce Schneier

Bruce Schneier is an American cryptographer, computer security specialist, and writer. He is the author of several books on computer security and cryptography, and is the founder and chief technology officer of BT Counterpane, formerly Counterpane Internet Security, Inc....
 and David A. Wheeler
David A. Wheeler

David A. Wheeler is a computer scientist . He is best known for his work on Open source software/Free software and Computer security....
, recommended that users should stop using Internet Explorer for normal browsing, and switch to a different browser instead; Wheeler specifically recommended Firefox.

Several technology columnists have suggested the same, including Wall Street Journal columnist Walter S. Mossberg, Washington Post columnist Rob Pegoraro, USA Today
USA Today

'USA TODAY' is a national United States daily newspaper published by the Gannett Company. It was founded by Allen Neuharth. The paper has the widest newspaper circulation of any newspaper in the United States , and among English-language broadsheets, it comes second worldwide, behind only the 2.6 million daily paid copies of The Times of...
’s Byron Acohido and Jon Swartz, Forbes
Forbes

Forbes is an United States publishing and mass media company. Its flagship publication, Forbes magazine, is published bi-weekly. Its primary competitors in the national business magazine category are Fortune , which is also published bi-weekly, and Business Week....
s Arik Hesseldahl
Arik Hesseldahl

Arik Hesseldahl is an American journalist currently working as a senior technology writer for BusinessWeek, a position he's had since 2005. He is the host of the weekly video podcast "Tech 101." He also writes the column "Byte Of The Apple," which focuses on Apple Inc....
, eWEEK.com Senior Editor Steven J. Vaughan-Nichols, and Desktop Pipeline’s Scot Finnie.

Awards

Mozilla Firefox has been given a number of awards by various organizations. These awards include:
  • CNET Editors' Choice, June 2008
  • PC Magazine Editors' Choice, June 2008
  • CNET Editors' Choice, June 2008
  • Webware 100 winner, April 2008
  • Webware 100 winner, June 2007
  • PC World 100 Best Products of 2007, May 2007
  • PC Magazine Editors' Choice, October 2006
  • CNET Editors' Choice, October 2006
  • PC World's 100 Best Products of 2006, July 2006
  • PC Magazine Technical Excellence Award, Software and Development Tools category, January 2006
  • PC Magazine Best of the Year Award, December 27, 2005
  • PC Pro Real World Award (Mozilla Foundation), December 8, 2005
  • CNET Editors' Choice, November 2005
  • UK Usability Professionals' Association Award Best Software Application 2005, November 2005
  • Macworld Editor's Choice with a 4.5 Mice Rating, November 2005
  • Softpedia User’s Choice Award, September 2005
  • TUX 2005 Readers' Choice Award, September 2005
  • PC World Product of the Year, June 2005
  • Forbes Best of the Web, May 2005
  • PC Magazine Editor’s Choice Award, May 2005


See also

  • History of Mozilla Firefox
    History of Mozilla Firefox

    The Mozilla Firefox project was created by Dave Hyatt and Blake Ross as an experimental branch of the Mozilla project. Firefox 1.0 was released on November 9 2004....
  • Browser timeline
    Browser timeline

    A time line of web browsers from the early 1990s to the present. Prior to browsers, many technologies and systems existed for information viewing and transmission....
  • Browser wars
    Browser wars

    The term "browser wars" refers to the competition for dominance in the web browser marketplace. The term is used to denote two specific periods of time: the competition between market-dominating Netscape Navigator and its eventual defeat by Microsoft Internet Explorer during the late 1990s, and the competition from 2003 onwards between the d...
  • Comparison of web browsers
    Comparison of web browsers

    The following tables compare general and technical information for a number of web browsers. Please see the individual products' articles for further information....
  • List of Firefox extensions
    List of Firefox extensions

    This is a list of some of the many available Add-on , software add-ons designed for Mozilla Firefox based web browsers. Many Firefox extensions work in the SeaMonkey and Flock web browsers as well....
  • List of web browsers
    List of web browsers

    The following is a list of web browsers....
  • The Book of Mozilla
    The Book of Mozilla

    The Book of Mozilla is a computer Easter egg found in the Netscape and Mozilla series of web browsers.It is viewed by directing the browser to about:mozilla....
  • Mozilla Prism
    Mozilla Prism

    Mozilla Prism, previously known as WebRunner, is a product in development which integrates web applications with the Desktop environment, allowing web applications to be launched from the desktop and configured Browserless....


Further reading


External links

  • for end-users
    End-user (computer science)

    The end-user is a concept in software engineering, referring to an abstraction of the group of persons who will ultimately operate a piece of software ....


Firefox
Mozilla Firefox

Mozilla Firefox is a web browser descended from the Mozilla Application Suite and managed by Mozilla Corporation. Official versions are distributed under the terms of the proprietary EULA....
 (category)
>
Mozilla
Mozilla

Mozilla was the official, public, original name of Mozilla Application Suite by the Mozilla Foundation, currently known as SeaMonkey internet suite....
Foundation
Mozilla Foundation

The Mozilla Foundation is a non-profit organization that exists to support and provide leadership for the open source Mozilla project. The organization sets the policies that govern development, operate key infrastructure and control trademarks and other intellectual property....
 • Corporation
Mozilla Corporation

The Mozilla Corporation is a wholly owned subsidiary of the Mozilla Foundation that coordinates and integrates the development of Internet-related application softwares such as the Mozilla Firefox web browser and the Mozilla Thunderbird email client by the growing global community of open-source developers, only some of whom are employed by...
Community / Customization
Features
Features of Mozilla Firefox

The features of Mozilla Firefox distinguish it from other web browsers such as Internet Explorer. It lacks many features found in other browsers, in an effort to combat interface bloat and to allow the browser to be shipped as a small, pared-down core easily customizable to meet individual users' needs....
 • Extensions
List of Firefox extensions

This is a list of some of the many available Add-on , software add-ons designed for Mozilla Firefox based web browsers. Many Firefox extensions work in the SeaMonkey and Flock web browsers as well....
 (category)Spread Firefox
Mozilla Firefox

Mozilla Firefox is a web browser descended from the Mozilla Application Suite and managed by Mozilla Corporation. Official versions are distributed under the terms of the proprietary EULA....
 • Adoption
Market adoption of Mozilla Firefox

Since its initial release in 2004, market adoption of Mozilla Firefox has increased rapidly. Firefox is the second-most popular browser worldwide, after Internet Explorer....
 • Firefox 2
Mozilla Firefox 2

Mozilla Firefox 2 is a version of Mozilla Firefox, a web browser released on October 24th 2006 by the Mozilla Corporation.Firefox 2 uses version 1.8 of the Gecko layout engine for displaying web pages....
 • Firefox 3
Mozilla Firefox 3

Mozilla Firefox 3 is a version of Mozilla Firefox, a web browser released on June 17, 2008 by the Mozilla Corporation. Firefox 3 uses version 1.9 of the Gecko layout engine for displaying web pages....
Forks and Related Projects
BurningDog • Flock
Flock (web browser)

Flock is a web browser built on Mozilla Firefox codebase that tends to specialize in providing Social network service and Web 2.0 facilities built into its user interface....
 • Gnuzilla
Gnuzilla

Gnuzilla, or GNUzilla, is a derivation of the Mozilla Application Suite created by the GNU Project as an attempt to be entirely free software. The reasons being that while the Mozilla project produces free and open software, the binaries released included additional proprietary software in the form of Talkback, a crash reporter....
 • GNU IceCat
GNU IceCat

GNU IceCat, formerly known as GNU IceWeasel, is a web browser distributed by the GNU Project. IceCat, which is made entirely of free software, is a fork of Mozilla Firefox....
 • Iceweasel • Netscape 9
Netscape Navigator 9

Netscape Navigator 9 is the most recent and final release of the Netscape series of browsers produced by the Netscape division of parent AOL, first announced on January 23, 2007....
 • Portable Edition • Swiftfox
Swiftfox

Swiftfox is a web browser based on Mozilla Firefox. It is available for Linux platforms and distributed by Jason Halme. Swiftfox is a set of Software build of Firefox optimized for different Intel and AMD microprocessors....
 • Swiftweasel
Swiftweasel

Swiftweasel is a build of Mozilla Firefox source code, which uses non-trademarked graphics and logos. It is optimized for several architectures, and is available for the Linux platform only....
 • Miro • Songbird
Songbird (software)

Songbird is a free-software media player and web browser developed as open source by a group known as Pioneers of the Inevitable , with a stated mission "to incubate Songbird, the first Web player, to catalyze and champion a diverse, open Media Web."...
 • XeroBank
Origins and Lineage
History of Mozilla Firefox

The Mozilla Firefox project was created by Dave Hyatt and Blake Ross as an experimental branch of the Mozilla project. Firefox 1.0 was released on November 9 2004....
Mozilla Suite
Mozilla Application Suite

The Mozilla Application Suite is a cross-platform integrated Internet suite. Its development was initiated by Netscape Communications Corporation, before their acquisition by AOL....
 • Netscape Navigator
Netscape Navigator

Netscape Navigator and Netscape are the names for the proprietary software web browser popular in the 1990s, and the flagship product of the Netscape Communications Corporation, and the dominant web browser in terms of Usage share of web browsers....
 • Netscape Communicator
Netscape Communicator

Netscape Communicator is an Internet suite that was produced by Netscape Communications Corporation. Initially released in June 1997, Netscape Communicator 4.0 was the successor to Netscape Navigator 3.x and included more groupware features intended to appeal to enterprises....
 • Netscape Communications Corp.