Firefox Free

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  • Main window
  • Main window
  • Add-ons manager
  • Options screen
  • Main Window
  • Customize Toolbar
  • Options
  • Main Screen
  • Main vindow

Editorial review

All comments (676)

Pedro Castro Senior editor

The following review written by one of the Software Informer contributors applies to version 25.0
Firefox ranks among the most widely used web browsers. This preference is not casual if we take into consideration the multiple advantages this application has. Probably the most widely valued of its characteristics is speed, due to its highly efficient rendering engine.
However, this is not the only reason why so many users have chosen Firefox as their default browser. Other appreciated characteristics are its low usage of resources and its compatibility with various web standards.

Firefox has an easy-to-use, nicely designed interface. Moreover, if you do not like the default look, you will probably find another one you like, because there is an extensive set of skins available online. However, in my opinion, it does not look as streamlined as Google Chrome. As most modern browsers, it allows using tabs to browse various web pages at the same time. Some recent modifications to the way tabs are used include closing a group of tabs with a click, but it does not let re-open recently closed tabs right from the toolbar.

Although versions of this program are available for a long list of languages, it is a pity that you cannot readily switch between languages, something you can easily do in Chrome. Fortunately, it does allow spell checking in multiple languages.

As this browser has a wide supportive community, frequent versions are released, which bring the user an increasing number of advantages. For example, the newest versions of Firefox can play H.264 video without the need to install add-ons or extensions. Similarly, they can manage Javascript objects with increasing efficiency, thus reducing the time necessary to render pages. Moreover, the availability of a download manager allows you to pause and resume download jobs.

In terms of security, Firefox is among the safest browsers. It uses strong encryption algorithms to protect your data when you are using the HTTPS protocol. Likewise, it uses smart cards for proper authentication and provides antiphishing protection. Unluckily, many users claim that the antiphising mechanism (consisting on sending data to online servers) opens a breach that lessens their privacy.

As said above, Firefox is compatible with various web standards. What is more, if you install an extension called IE Tab, this will allow you to use IE's rendering engine within a Firefox tab. This can solve the problems that appear when you try to open a web page using Microsoft web


  • It is very easy to use.
  • It allows browsing various web pages at the same time.
  • It is fast and secure.
  • It allows adding add-ons.
  • It uses few resources.
  • It is compatible with various web standards.


  • It does not look as streamlined as Chrome.
  • Once installed, you cannot switch the interface language.

What's new in version 32.0

What’s New
Add the search field to the new tab page
Support of Prefer:Safe http header for parental control (learn more)
mozilla::pkix as default certificate verifier (learn more)
Block malware from downloaded files (learn more)
Partial implementation of the OpenType MATH table (section 6.3.6) see documentation about mathematical fonts and the MathML Torture Test for details
audio/video .ogg and .pdf files handled by Firefox if no application specified (Windows only)
Upper Sorbian [hsb] locale added
Removal of the CAPS infrastructure for specifying site-specific permissions (via capability.policy.* preferences). Most notably, attempts to use this functionality to grant access to the clipboard will no longer work. The sole exception is the checkloaduri permission, which may still be used as before to allow sites to load file:// URIs.
WebVTT implemented and enabled (learn more)
CSS3 variables implemented (learn more)
Developer Tools: Add-on Debugger (learn more)
Developer Tools: Canvas Debugger (learn more)
New Array built-in: Array.prototype.fill() (learn more)
New Object built-in: Object.setPrototypeOf() (learn more)
CSP 1.1 nonce-source and hash-source enabled by default
Developer Tools: Eyedropper tool added to the color picker (learn more)
Developer Tools: Editable Box Model (learn more)
Developer Tools: Code Editor improvements (learn more)
Developer Tools: Console stack traces (learn more)
Developer Tools: Copy as cURL (learn more)
Developer Tools: Styled console logs (learn more)
navigator.sendBeacon enabled by default (learn more)
Dialogs spawned from the onbeforeunload event no longer block access to the rest of the browser
Search for partially selected link text from context menu (985824)
Various security fixes

Known Issues
Slow shut downs lead to 'Firefox is already running' warning (see 966469 and 985655)
PDF.js: With some fonts, some characters might not be displayed. Affects a very small number of PDF (1028735)
Mac OS X and Windows: Citrix Receiver no longer works. As a workaround, mark the plugin as Always Enable in the addon manager (1025627)
GNU/Linux and Windows XP: Google Maps Street View displays a black screen (1034593)
Resolved in v32.0a2
Mac OS X: cmd-L no longer opens a new window when no window is available (1008793)
Resolved in v32.0a2

What's new in version 30.0

Sidebars button in browser chrome enables faster access to social, bookmark, & history sidebars
Mac OS X command-E sets find term to selected text

What's new in version 21.0

The Social API now supports multiple providers
Enhanced three-state UI for Do Not Track (DNT)
Firefox will suggest how to improve your application startup time if needed
Preliminary implementation of Firefox Health Report
Ability to restore removed thumbnails on New Tab Page
CSS -moz-user-select:none selection changed to improve compatibility with -webkit-user-select:none (bug 816298)
Graphics related performance improvements (bug 809821)
Removed E4X support from Spidermonkey
Implemented Remote Profiling
Integrated add-on SDK loader and API libraries into Firefox
Added support for element
Implemented scoped stylesheets
Added support for window.crypto.getRandomValues
Some function keys may not work when pressed (833719)
Browsing and Download history clearing needs unification to avoid confusion on clearing download history (847627)
21.0: Security fixes can be found here

What's new in version 15.0

Sites visited while in Private Browsing mode could be found through manual browser cache inspection (787743)
Silent, background updates
Support for SPDY networking protocol v3
WebGL enhancements, including compressed textures for better performance
Localization in Maithili (see all available locales)
Optimized memory usage for add-ons
JavaScript debugger integrated into developer tools
New layout view added to Inspector
High precision event timer implemented
The CSS word-break property has been implemented.
New responsive design tool allows web developers to switch between desktop and mobile views of sites
Native support for the Opus audio codec added
The and elements now support the played attribute
The element now supports the media attribute
Focus rings keep growing when repeatedly tabbing through elements (720987)

What's new in version 14.0

Google searches now utilize HTTPS
Full screen support for Mac OS X Lion implemented
The Awesome Bar now auto-completes typed URLs
Improved site identity manager, to prevent spoofing of an SSL connection with favicons
Pointer Lock API implemented
New API to prevent your display from sleeping
New text-transform and font-variant CSS improvements for Turkic languages and Greek
Various security fixes
GIF animation can gets stuck when src and image size are changed (743598)
OS X: nsCocoaWindow::ConstrainPosition uses wrong screen in multi-display setup (752149)
CSS :hover regression when an element's class name is set by Javascript (758885)

What's new in version 13.0

- A new tab shows most visited pages.
- The default home page provides quicker access to bookmarks, history, settings, sync, downloads, etc.

What's new in version 4.0 beta

It supports the WebM format so you can watch open HD quality videos.
It fixes flaws in some web standards that allow bad guys to snoop around and expose your browser history.
New JS values
Multi-touch Support
Retained layers
Firefox starts up even faster thanks to XPCOM module improvements that pave the way to a better extensions framework.
Stylin’ Pages with CSS3
HTML5 Support
Web Console
JetPack SDK (Making Add-on Development Easier)
new Direct2D Hardware Graphics Acceleration (Windows only)
Crash Protection
new HSTS

What's new in version 3.5

MFSA 2009-51 Chrome privilege escalation with FeedWriter
MFSA 2009-50 Location bar spoofing via tall line-height Unicode characters
MFSA 2009-49 TreeColumns dangling pointer vulnerability
MFSA 2009-47 Crashes with evidence of memory corruption (rv:
Fixed in Firefox 3.5.2
MFSA 2009-46 Chrome privilege escalation due to incorrectly cached wrapper
MFSA 2009-45 Crashes with evidence of memory corruption (rv:
MFSA 2009-44 Location bar and SSL indicator spoofing via on invalid URL
MFSA 2009-38 Data corruption with SOCKS5 reply containing DNS name longer than 15 characters
Fixed in Firefox 3.5.1
MFSA 2009-41 Corrupt JIT state after deep return from native function
MFSA 2009-35 Crash and remote code execution during Flash player unloading
Fixed in Firefox 3.5
MFSA 2009-43 Heap overflow in certificate regexp parsing
MFSA 2009-42 Compromise of SSL-protected communication
MFSA 2009-40 Multiple cross origin wrapper bypasses
MFSA 2009-39 setTimeout loses XPCNativeWrappers
MFSA 2009-37 Crash and remote code execution using watch and __defineSetter__ on SVG element
MFSA 2009-36 Heap/integer overflows in font glyph rendering libraries
MFSA 2009-34 Crashes with evidence of memory corruption (rv:1.9.1/
* Roadmap
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* Get the Source
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* Report A Problem
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* Bugzilla
* Tinderbox
* Hg

Publisher's description

This official description applies to version 32.0

Firefox is an open-source Internet browser for Windows, MAC, and Linux. It has a Private Browsing window, which can be used to avoid saving of browser history, search history, or temporary internet files. The latest version has an interface that is fully customizable. You can apply a variety of themes, available from the developer site.

This suite contains the following program

Mozilla Maintenance Service Mozilla Maintenance Service

Latest comments

  All comments (676)
  • 0
    Tech Informer 11 hours ago

    A must-have app for every Internet user.
    Firefox is the only web browser which provides you SBI [save background image] facility.
    Neither Chrome nor Opera provide this facility.
    1) Best in terms of security and privacy.
    2) Simple UI.
    3) Easy way of bookmarking.
    4) A large data-base of add-ons.
    5) Provides SBI facility.
    6) Best for slow networks.
    1) it has changed many easy and good features of previous versions like 3D web page view.
    2) it takes time to start up if you have add-ons in your browser.
    Our opinion:- Pick it.

  • 0
    Guest 12 hours ago

    Normally I found some problems to open some web, which I can open in Internet Explorer.

  • 0
    M Yesterday, 8:40 AM

    Its not as fancy as other browser, but it is stable and get things done.

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