Mozilla FirefoxBrowser
Firefox Browser
Firefox Browser, known in Chinese as "Firefox browser" (Firefox), is a free and open-source web browser from Mozilla.
Firefox was released in 2004 and is one of the most popular browsers today.
Firefox runs on Windows, Mac OS X, Linux, and Android.
Firefox Statistics
The following table isbrowser statisticsdetails about Firefox usage in:
| 2014 | Total | FF 30 | FF 29 | FF 28 | FF 27 | FF 26 | FF 25 | Older | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May | 24.9% | 0.1% | 14.2% | 5.2% | 0.5% | 0.5% | 0.2% | 4.2% | ||||
| April | 25.0% | 1.1% | 18.1% | 1.2% | 0.7% | 0.3% | 3.6% | |||||
| March | 25.6% | 0.3% | 3.4% | 16.3% | 1.0% | 0.4% | 4.2% | |||||
| February | 26.4% | 0.6% | 11.7% | 8.7% | 0.6% | 4.8% | ||||||
| January | 26.9% | 1.2% | 18.9% | 1.0% | 5.8% | |||||||
| 2013 | Total | FF 26 | FF 25 | FF 24 | FF 23 | FF 22 | FF 21 | FF 20 | FF 19 | FF 18 | FF 17 | Older |
| December | 26.8% | 6.9% | 13.3% | 1.1% | 0.5% | 0.4% | 0.3% | 0.4% | 0.2% | 0.2% | 0.5% | 3.0% |
| November | 26.8% | 1.0% | 16.2% | 3.5% | 0.7% | 0.5% | 0.4% | 0.4% | 0.3% | 0.2% | 0.7% | 2.9% |
| October | 27.2% | 0.1% | 1.3% | 18.4% | 2.0% | 0.7% | 0.4% | 0.5% | 0.3% | 0.4% | 0.7% | 2.5% |
| September | 27.8% | 0.1% | 0.3% | 3.1% | 17.5% | 1.0% | 0.6% | 0.5% | 0.3% | 0.4% | 0.9% | 3.2% |
| August | 28.2% | 0.7% | 10.8% | 9.9% | 1.0% | 0.7% | 0.4% | 0.4% | 0.8% | 3.5% | ||
| July | 28.9% | 0.1% | 1.2% | 18.0% | 3.1% | 1.0% | 0.5% | 0.5% | 0.8% | 3.7% | ||
| June | 28.9% | 0.1% | 1.7% | 19.8% | 1.3% | 0.7% | 0.5% | 0.8% | 4.0% | |||
| May | 27.7% | 0.1% | 0.5% | 6.5% | 14.0% | 0.9% | 0.6% | 0.8% | 4.3% | |||
| April | 27.9% | 0.1% | 0.7% | 12.9% | 7.3% | 0.8% | 0.8% | 5.9% | ||||
| March | 28.5% | 0.1% | 0.9% | 19.0% | 1.4% | 0.9% | 6.2% | |||||
| February | 29.6% | 0.1% | 0.2% | 4.6% | 16.0% | 1.2% | 7.5% | |||||
| January | 30.2% | 0.1% | 0.6% | 12.4% | 8.3% | 8.8% | ||||||
| 2012 | Total | FF 17 | FF 16 | FF 15 | FF 14 | FF 13 | FF 12 | FF 11 | FF 9-10 | FF 4-8 | FF 3.6 | Older |
| December | 31.1% | 16.3% | 5.6% | 1.3% | 1.0% | 0.7% | 1.1% | 0.6% | 1.2% | 1.2% | 0.8% | 1.3% |
| November | 31.2% | 2.5% | 19.4% | 1.8% | 1.2% | 0.8% | 1.2% | 0.6% | 1.3% | 1.3% | 0.8% | 0.3% |
| October | 31.8% | 0.4% | 9.5% | 12.4% | 1.8% | 1.0% | 1.4% | 0.8% | 1.4% | 1.6% | 1.0% | 0.5% |
| September | 32.2% | 0.8% | 17.7% | 4.8% | 1.3% | 1.6% | 1.0% | 1.6% | 1.9% | 1.2% | 0.3% | |
| August | 32.8% | 1.9% | 20.3% | 2.1% | 1.8% | 1.1% | 1.7% | 2.1% | 1.2% | 0.7% | ||
| July | 33.7% | 0.3% | 7.4% | 15.2% | 3.0% | 1.3% | 2.1% | 2.4% | 1.5% | 0.5% | ||
| June | 34.4% | 0.6% | 12.1% | 12.5% | 1.6% | 2.3% | 2.7% | 1.8% | 0.8% | |||
| May | 35.2% | 0.1% | 0.8% | 21.4% | 3.8% | 2.7% | 3.4% | 2.3% | 0.7% | |||
| April | 35.8% | 0.1% | 2.6% | 21.6% | 3.8% | 3.8% | 3.1% | 0.8% | ||||
| March | 36.3% | 0.3% | 9.1% | 17.3% | 5.0% | 3.7% | 0.9% | |||||
| February | 37.1% | 0.1% | 0.6% | 24.2% | 6.5% | 4.3% | 1.4% | |||||
| January | 37.2% | 0.1% | 18.6% | 12.4% | 5.0% | 1.1% | ||||||
| 2011 | Total | FF 9 | FF 8 | FF 7 | FF 6 | FF 5 | FF 4 | FF 3.6 | FF 3.5 | FF 3.0 | Older | |
| December | 37.7% | 1.8% | 22.8% | 2.1% | 1.5% | 1.2% | 1.3% | 5.6% | 0.6% | 0.5% | 0.3% | |
| November | 38.1% | 0.4% | 12.7% | 11.5% | 2.2% | 1.5% | 1.5% | 6.9% | 0.6% | 0.5% | 0.3% | |
| October | 38.7% | 0.6% | 19.8% | 5.1% | 2.0% | 1.8% | 7.9% | 0.7% | 0.5% | 0.3% | ||
| September | 39.7% | 1.5% | 22.2% | 3.1% | 2.2% | 9.0% | 0.7% | 0.7% | 0.3% | |||
| August | 40.6% | 9.5% | 15.9% | 2.9% | 10.3% | 0.8% | 0.8% | 0.4% | ||||
| July | 42.0% | 0.6% | 23.2% | 4.6% | 11.5% | 0.9% | 0.9% | 0.3% | ||||
| June | 42.2% | 5.6% | 21.5% | 12.3% | 1.5% | 0.9% | 0.4% | |||||
| May | 42.4% | 0.3% | 23.4% | 15.6% | 1.8% | 1.0% | 0.3% | |||||
| April | 42.9% | 15.7% | 23.8% | 2.1% | 1.1% | 0.2% | ||||||
| March | 42.2% | 5.2% | 32.9% | 2.5% | 1.3% | 0.3% | ||||||
| February | 42.4% | 1.9% | 35.8% | 2.9% | 1.5% | 0.3% | ||||||
| January | 42.8% | 1.5% | 36.1% | 3.1% | 1.7% | 0.4% | ||||||
| 2010 | Total | FF 4 | FF 3.6 | FF 3.5 | FF 3.0 | Older | ||||||
| December | 43.5% | 1.1% | 36.5% | 3.5% | 2.0% | 0.4% | ||||||
| November | 44.0% | 0.8% | 36.9% | 3.8% | 2.0% | 0.5% | ||||||
| October | 44.4% | 0.7% | 36.2% | 4.5% | 2.4% | 0.6% | ||||||
| September | 45.1% | 0.8% | 35.3% | 5.6% | 2.9% | 0.5% | ||||||
| August | 45.8% | 0.6% | 35.2% | 6.1% | 3.1% | 0.6% | ||||||
| July | 46.4% | 0.4% | 34.5% | 7.3% | 3.6% | 0.6% | ||||||
| June | 46.6% | 32.7% | 9.1% | 4.0% | 0.8% | |||||||
| May | 46.9% | 31.7% | 10.0% | 4.4% | 0.8% | |||||||
| April | 46.4% | 29.4% | 11.5% | 4.6% | 0.9% | |||||||
| March | 46.2% | 22.1% | 17.6% | 5.6% | 0.9% | |||||||
| February | 46.5% | 10.5% | 28.5% | 6.5% | 1.0% | |||||||
| January | 46.3% | 2.2% | 34.2% | 8.6% | 1.3% | |||||||
| 2009 | Total | FF 3.5 | FF 3.0 | FF 2.0 | Older | |||||||
| December | 46.4% | 33.3% | 11.2% | 1.2% | 0.7% | |||||||
| November | 47.0% | 31.4% | 13.6% | 1.5% | 0.5% | |||||||
| October | 47.5% | 29.8% | 15.7% | 1.6% | 0.4% | |||||||
| September | 46.6% | 27.3% | 17.2% | 1.8% | 0.3% | |||||||
| August | 47.4% | 21.0% | 24.0% | 1.9% | 0.5% | |||||||
| July | 47.9% | 12.1% | 33.3% | 1.9% | 0.6% | |||||||
| June | 47.3% | 1.2% | 43.4% | 2.3% | 0.4% | |||||||
| May | 47.7% | 44.3% | 2.9% | 0.5% | ||||||||
| April | 47.1% | 43.4% | 2.8% | 0.9% | ||||||||
| March | 46.5% | 42.2% | 3.0% | 1.3% | ||||||||
| February | 46.4% | 41.5% | 3.8% | 1.1% | ||||||||
| January | 45.5% | 39.5% | 4.6% | 1.4% | ||||||||
| 2008 | Total | FF 3.0 | FF 2.0 | FF 1.5 | Moz | |||||||
| December | 44.7% | 38.1% | 6.2% | 0.1% | 0.3% | |||||||
| November | 44.6% | 35.9% | 8.0% | 0.3% | 0.4% | |||||||
| October | 44.5% | 34.9% | 8.7% | 0.4% | 0.5% | |||||||
| September | 43.1% | 31.9% | 10.1% | 0.6% | 0.5% | |||||||
| August | 44.2% | 25.5% | 17.5% | 0.7% | 0.5% | |||||||
| July | 43.1% | 20.7% | 21.1% | 0.8% | 0.5% | |||||||
| June | 41.5% | 8.9% | 31.2% | 0.9% | 0.5% | |||||||
| May | 40.5% | 2.9% | 35.9% | 1.0% | 0.7% |
The above statistics are based on users of the Example Tutorial website.
Firefox 29
Firefox 29 was released on April 29, 2014.
Firefox 29 runs on Windows, Mac, Linux, and Android.
New features:
- Some redesigned tools and a refreshed interface
- Enhanced Firefox Sync service
- Menu moved to the top-right corner
- New "Customize" tool, where you can add or move features and add-ons
- Users can create a bookmark by clicking
- Support for the CSS box-sizing property (without -moz- prefix)
- Support for HTML5 input type="number"
- Support for HTML5 input type="color"
Firefox 28
Firefox 28 was released on March 18, 2014.
Firefox 28 runs on Windows, Mac, Linux, and Android.
New features:
- Mac OS X: Notification Center supports web notifications
- Horizontal volume controls for HTML5 audio/video
- Support for Opus in WebM
- Implementation of VP9 video decoding
- Support for the MathML 2.0 'mathvariant' attribute
- Background thread reporting
- Support for multi-line flexbox in layout
Firefox 27
Firefox 27 was released on February 4, 2014.
Firefox 27 runs on Windows, Mac, Linux, and Android.
New features:
- A major update to the Firefox Social API- Now allows users to run multiple services simultaneously
- Support for Google's SPDY 3.1 protocol and Transport Layer Security (TLS) versions 1.1 and 1.2- These are essentially successors to the well-known SSL encryption protocol
- Reset style sheets using "all:unset"
- Support for scrolling field sets
- CSS cursor keywords -moz-grab and -moz-grabbing are now unprefixed
- Support for the mathematical function Math.hypot()
- Support for dashed lines on Canvas
Firefox 26
Firefox 26 was released on December 10, 2013.
Firefox 26 runs on Windows, Mac, Linux, and Android.
New features:
- All Java plugins default to "click to play"
- Password Manager supports script-generated password fields
- Support for H.264-encoded video on Linux
- Support for MP3 audio on Windows XP- This completes MP3 support across Windows operating system versions
- Removed prompt when a site requests AppCache
- Support for the CSS3 image-orientation property
- New App Manager- Allows you to deploy and debug HTML5 apps on Firefox OS phones and the Firefox OS emulator
- IndexedDB can be used as an "optimistic" storage area- Uses LRU eviction policy, does not require storing any hints or data in the pool, just a short-lived temporary storage
- Reduced memory usage, improved image processing
Firefox 25
Firefox 25 was released on October 29, 2013.
Firefox 25 runs on Windows, Mac, Linux, and Android.
New features:
- Web Audio support
- CSS3 background-attachment:local support
- iframe document content can be specified inline
- Many new ECMAScript 6 functions are available
- The Profiler tool can save and import test results
Firefox 24
Firefox 24 was released on September 17, 2013.
Firefox 24 runs on Windows, Mac, Linux, and Android.
New features:
- Enabled support for WebRTC (on Android)
- Share NFC on Android
- Added a feature to bulk close tabs to the right
- New scrollbar style on OS X 10.7
- Drag the chat window into a separate window.
- Optimize prominent SVG rendering around images when tiling and scaling images.
- Improve the browser console for an enhanced debugging experience, replacing the existing error console.
- The undo list feature is no longer supported.
- Sherlock files loaded from the application or profile directories are no longer supported.
Firefox 23
Firefox 23 was released on August 7, 2013.
Firefox 23 runs on Windows, Mac, Linux, and Android mobile.
New features:
- New logo
- Mixed content blocker - prevents reading insecure content on the web by fully restricting URLs.
- Share button - lets users share content with friends/family with a single click.
- Network monitor tool designed for developers - breaks down website components and informs developers of load times.
Firefox 22
Firefox 22 was released on June 25, 2013.
Firefox 22 runs on Windows, Mac, Linux, and Android mobile.
New features:
- Fixed 14 security issues
- WebRTC enabled by default
- OdinMonkey - improved JavaScript performance
- Ability to change HTML5 audio/video playback rate
- New display scaling option, enabled by default - renders larger text on high-resolution displays.
- Automatic word wrap for text files
Firefox 21
Firefox 21 was released on May 14, 2013.
Firefox 21 runs on Windows, Mac, Linux, and Android mobile.
New features:
- Firefox Health Report - a tool for tuning the browser
- Improved startup time
- Support for the HTML5 <main> element
- Support for scoped stylesheets
- Three "Do Not Track" options: "Track," "Do Not Track," and "Not set"
- Extended Social API - adding new social services: Cliqz, Mixi, and msnNOW, as well as Firefox's Facebook Messenger (a desktop window chat client)
Firefox 20
Firefox 20 was released on April 2, 2013.
Firefox 20 runs on Windows, Mac, Linux, and Android mobile.
New features:
- New download manager
- Private browsing windows
- View developer tools in a separate window
- Close hanging plug-ins without the browser hanging
- <canvas> now supports blend modes
- Various <audio> and <video> improvements
Firefox 19
Firefox 19 was released on February 20, 2013.
Firefox 19 runs on Windows, Mac, and Linux.
New features:
- New built-in PDF reader- Read PDFs without a plug-in
- @page support for printed documents
- Export canvas content as an image- Canvas element content can be exported as an image using toBlob()
- Implement CSS viewport-percentage length units (vh, vw, vmin, and vmax)
- Support for CSS text-transform: full-width
- Faster startup
- XFormsRemoved
Firefox 18
Firefox 18 was released on January 8, 2013.
Firefox 18 runs on Windows, Mac OS X (Snow Leopard, Lion, and Mountain Lion), Linux, and Android.
New features:
- IonMonkey- New JavaScript compiler (7% - 26% faster than Firefox 17)
- Support for Retina displays
- Built-in PDF viewer
- Preliminary support for Web Real-Time Communication (WebRTC - Web Real Time Communication)
Firefox 17
Firefox 17 was released on November 20, 2012.
Firefox 17 runs on Windows, Mac OS X, Linux, and Android.
New features:
- Updated Awesome Bar- With larger icons
- Tab animations
- Social APIAllows you to log into your social network (Facebook) through the browser.
- Implemented click-to-playTo prevent vulnerable plugin versions from running without user permission/li>
- Added a new markup panel for HTML/DOM in the Page Inspector.
- Implemented the HTML5 sandbox attribute (for iframes).
- Support for Mountain Lion's Notification Center.
Firefox 16
Firefox 16 was released on October 9, 2012.
Firefox 16 runs on Windows, Mac OS X, Linux, and Android.
New features:
- Native support for PDF
- New developer toolbar- Allows you to access the Web Console, Inspector, and Debugger. The toolbar itself supports some commands.
- VoiceOver support for OS X
- Support for web applications- Start using inMozilla app directorythe applications in
- Incremental garbage collection- Speeds up your browser by reclaiming/reusing memory no longer used by JavaScript programs.
- Support for unprefixed CSS3 animations, transitions, transforms, and gradients in Firefox 16.
Firefox 15
Firefox 15 was released on August 28, 2012.
Firefox 15 runs on Windows, Mac OS X, Linux, and Android.
New features:
- Seamless background updates
- Stopped most memory leaks caused by add-ons.
- Support for the SPDY network protocol v3
- WebGL enhancements
- HTML5 - Support for the media attribute in <source>
- HTML5 - Support for the played attribute in <audio> and <video>
- CSS3 - Support for the CSS word-break property
- Faster debugger
- New design tool that allows web developers to switch between desktop and mobile site views.
- Native support for the Opus audio codec.
Firefox 14
Firefox 14 was released on July 17, 2012.
Firefox 14 runs on Windows, Mac OS X, Linux, and Android.
New features:
- Privacy features- Firefox uses HTTPS to encrypt your Google searches.
- Bug fixes- Provides full-screen support for Mac OS X Lion.
- Security features- You can whitelist frequently visited and trusted sites.
Firefox 13
Firefox 13 was released on June 5, 2012.
Firefox 13 runs on Windows, Mac OS X, Linux, and Android.
New features:
- The default home page provides faster access to bookmarks, history, settings, etc.
- When opening a new tab, users can see their most visited webpages.
- By default, the SPDY protocol is enabled for faster browsing of supported sites.
- A total of 72 improvements, including Page Inspector, HTML panel, Style Inspector, Scratchpad, and Style Editor.
- Improved support for the following CSS properties: column-fill, CSS3 background-position.
- Support for the :invalid pseudo-class.
- CSS3 <angle> type units are now supported.
Firefox 12
Firefox 12 was released on April 24, 2012.
Firefox 12 runs on Windows, Mac OS X, Linux, and Android.
New features:
- Windows: Firefox is easier to update with a small prompt (User Account Control).
- Page source code displays line numbers.
- Support for line breaks in the title attribute.
- Support for the CSS text-align-last property.
Firefox 11
Firefox 11 was released on March 13, 2012.
Firefox 11 runs on Windows, Mac OS X, Linux, and Android.
New features:
- Style Editor - A new stylesheet editor. Visit any web page, then select Style Editor from the Web Developer menu.
- "Tilted" 3D page structure view - The inspector tools provide a "3D" button.
- Support for the CSS text-size-adjust property (controls text size on mobile devices and displays scrollbars when zooming into a web page).
- Support for the outerHTML property.
- Firefox can migrate bookmarks, history, and cookies from Google Chrome.
- HTML5 tags are highlighted correctly when viewing source code.
- Files can be stored in IndexedDB.
- Removed the moz prefix from the WebSockets API.
Firefox 10
Firefox 10 was released on January 31, 2012.
Firefox 10 runs on Windows, Mac OS X, Linux, and Android.
New features:
- Page Inspector / CSS Inspector - Lets developers inspect HTML and CSS.
- Scratchpad - A code editor with syntax highlighting for JavaScript developers.
- New 3D graphics processing capabilities and antialiasing for WebGL content.
- Fullscreen API - Enables developers to create fullscreen applications and games, and deliver fullscreen video content.
- Support for CSS 3D transforms.
Firefox 9
Firefox 9 was released on December 20, 2011.
Firefox 9 runs on Windows, Mac OS X, and Linux.
New features:
- Added type inference, improving JavaScript performance (30% faster than Firefox 8).
- Improved theme integration for Mac OS X Lion.
- Added two-finger swipe navigation for Mac OS X Lion.
- Added support for querying the "Do Not Track" status via JavaScript.
- Added support for CSS3 font-stretch.
- Improved support for HTML5, MathML, and CSS.
Firefox 8
Firefox 8 was released on November 8, 2011.
Firefox 8 runs on Windows, Mac OS X, and Linux.
New features:
- Twitter search engine installed by default.
- Third-party add-ons disabled by default.
- A new "Add-on Selection Dialog" that allows validating add-ons during upgrades.
- Tabs can be loaded "on demand", making it faster to restore windows with multiple tabs.
- Support for Cross-Origin Resource Sharing (CORS), allowing developers to load WebGL textures from other domains in a secure way
- HTML5 context menu support
- Firefox for Android: Mozilla also added more features so that the Firefox browser can run on Android devices
Firefox 7
Firefox 7 was released on September 27, 2011.
Firefox 7 runs on Windows, Mac OS X, and Linux.
New features:
- Improved memory handling
- Bookmark and password changes are always synced instantly when using Firefox Sync.
- The "http://" URL prefix is hidden by default (like Chrome)
- Updated the WebSocket protocol from version 7 to version 8
- Added a system for users to send performance data back to Mozilla
Firefox 6
Firefox 6 was released on August 16, 2011.
Firefox 6 runs on Windows, Mac OS X, and Linux.
New features:
- The address bar highlights the domain of the website you are visiting
- Streamlined appearance of the site identity block
- Added support for the latest draft version of WebSockets via a prefixed API.
- Added support for EventSource / server-sent events
- Added support for window.matchMedia
- Added Scratchpad, an interactive JavaScript prototyping environment
- Added a new Web Developer menu item and moved related development items into it
- Improved usability of the Web Console
- Improved discoverability of Firefox Sync
- Reduced browser startup time when using Panorama.
Firefox 5
Firefox 5 was released in June 2011.
Firefox 5 runs on Windows, Mac OS X, and Linux.
New features:
- Added CSS animation support
- Tuned HTTP idle connection logic to improve performance
- Improved canvas, JavaScript, memory, and network performance
- Improved standards support for HTML5, XHR, MathML, SMIL, and canvas.
- Improved spell checking
- Improved desktop environment integration for Linux users
- WebGL content no longer loads cross-origin textures
- Background tabs limit setTimeout and setInterval to 1000ms to improve performance
Firefox 4
Firefox 4 was released in March 2011.
Firefox 4 runs on Windows, Mac OS X, and Linux.
New features:
- Supports over 80 languages!
- The fastest Firefox ever -Firefox is six times faster than previous releases.
- App tabs- A permanent homepage that shows frequently visited sites like web mail, Twitter, Pandora, Flickr.
- Switch to Tab- Easily find and switch to any open tab from the Awesome Bar.
- Panorama- Drag and drop tabs into manageable groups to save time when navigating multiple open tabs.
- Firefox Sync- Access your Awesome Bar history, bookmarks, open tabs, passwords, and data across multiple computers and mobile devices.
- New Add-ons Manager- Over 200,000 add-ons available to customize Firefox's features, functionality, and look.
- Do Not Track- Allows users to opt out of tracking for behavioral advertising.
- Privacy first- Prevent others from accessing your browser history.
- HTTP Strict Transport Security (HSTS)- Establish secure connections to stop "man-in-the-middle" attacks, thereby protecting sensitive data.
- Content Security Policy (CSP)- Prevent cross-site scripting attacks by allowing websites to explicitly tell the browser which content is legitimate.
- JIT compiler- Achieve faster page loading and better performance by enhancing the existing TraceMonkey JIT and SpiderMonkey interpreter.
- HTML5 support- Includes hardware acceleration, HD video (WebM), 3D graphics, offline data storage, professional typography, touchscreen interface, and Mozilla Audio API.
- Improved existing tools- Such as CSS, Canvas, and SVG.
- Uninterrupted browsing- Keep user browsing uninterrupted when Adobe Flash, Apple QuickTime, or Microsoft Silverlight plugins crash.
Firefox 3.6
Firefox 3.6 was released in January 2011.
Firefox 3.6 is built on Mozilla's Gecko 1.9.2 web rendering platform, which has been in development since early 2009 and includes many improvements for web developers, plugin developers, and users. This version is also faster and more responsive than previous versions, and has been optimized to run on small device operating systems such as Maemo.
New features:
- Persona themes- Allows users to change Firefox's appearance with a single click.
- Prevent installation of outdated plugins- Ensure user safety while browsing the web.
- Open local videos can be displayed full screen, and support the poster frame.
- Improved JavaScript performance
- Provides web developers with the ability to run scripts asynchronously- To speed up page loading time
- Support for downloadable web fonts- Using the new WOFF font format
- Improved support for CSS3, DOM, and HTML5
Older Firefox Versions
Firefox 3.5 - Released in June 2009.
Firefox 3.0 - Released in June 2008.
Firefox 2.0 - Released in December 2006.
Firefox 1.5 - Released in November 2005.
Firefox 1.0 - Released in November 2004.
Firefox Resources
Firefox Support Site
The Firefox support site includes a searchable knowledge base, download center, product FAQ, and auxiliary support directory.