• Navigation
  • open search





Mozilla Firefox

Download Editors' Rating:
Average User Rating:
out of 15627 votes

Quick Specs

  • Version:
  • Total Downloads:
  • Date Added:
    Aug. 28, 2015
  • Price:
  • File Size:
  • Downloads Last Week:
  • Platform:
  • Product ranking:
    #1 in Web Browsers

Editors' Review


Windows 10 introduced a different way of assigning default programs that requires a few more clicks and greater familiarity with the operating system's interface. Mozilla has responded with Firefox for Windows 10, which features a more streamlined Firefox installation, some visual tweaks, and a more secure add-on development process.


Add-on certification: Mozilla is attempting to make its add-ons safer by introducing certification. Developers must now adhere to a set of standards if they want to continue offering their add-ons. This standardization should reduce malicious hacks (not that there were many to begin with).

Search box utility: To the right of the address bar is a box that takes search queries. The advantage over Chrome is that you can search sites like IMDb, Amazon, and Wikipedia directly, without having to load them (or Google.com) first. This is helpful if you have a spotty connection or low data caps, or if you don't want Google logging your searches.

Smooth options navigation: Chrome bunches its settings onto one page, with small fonts and an inconsistent mix of buttons, links, and checkboxes. By contrast, Firefox's settings are cleanly categorized and subcategorized with tabs and a left-hand pane. When you want more explanation for what a setting does, just click the questi0n mark box in the lower right of the option page.

Enhanced password security: Unlike Chrome, passwords you save in Firefox are encrypted, and you can protect them with a master password. This function does not transmit your passwords into a cloud storage system, unless you want to use Firefox Sync, which is optional and can operate alongside Firefox's local password storage.

Smoother scrolling: Whether you're scrolling with a mouse wheel, the arrow keys, or the Page Up/Page Down keys, Firefox moves the webpage up and down with a gliding action that makes it easier to track how you're moving on the page. It's not as slick as the scroll in Internet Explorer 11 or Microsoft Edge, but it's better than Chrome's jumpy technique.


Australis could still use a few tweaks: The Australis redesign in April 2014 changed every aspect of Firefox's interface, and not all of it for the better. There's still no way to resize buttons, the icons in the upper right are monochromatic and thus more difficult to distinguish, and the original main menu button had a more compact menu. Thankfully, you can get most of the old functionality back with the free Classic Theme Restorer add-on.

Underwhelming add-on discovery: Comparing Mozilla's add-on website to Google's, Google delivers more relevant search results and more visual aids showing how the add-on looks and what it does.

Bottom Line

Firefox for Windows 10 isn't a whole lot different from the version that we reviewed in April 2014, but it's still an excellent browser that performs well against the competition, even exceeding it in a few areas.

read more +

Publisher's Description

read more +
User Reviews
  • Current Version


    out of 3 votes

    • 5 star 1
    • 4 star 0
    • 3 star 1
    • 2 star 0
    • 1 star 1
  • All Versions


    out of 15627 votes

    • 5 star 10321
    • 4 star 2429
    • 3 star 991
    • 2 star 661
    • 1 star 1225
  • My rating

    0 stars

    Write review

Results 1–3 of 3

5 stars

"It's ok, but there are very dark clouds on the horizon."

September 01, 2015  |  By wyzwyk

 |  Version: Mozilla Firefox 40.0.3


1. There are lots of useful add-on extensions that you can customize your browser with. Firefox is the most customizable browser by far!
2. FF renders web pages fast and accurately.
3. It is reasonably stable and secure.


1. The browser is slow to open if you have installed many extension add-ons.
2. Over the past several months Mozilla has added some ill-thought-out application features to Firefox that should have been extensions (Hello, Pocket ...). Please, let me determine what I want on my browser.
3. (Very Important information) Mozilla has plans to make a number of changes that will radically alter the Firefox extension landscape. Some will debut in the next release, with others arriving in subsequent Firefox releases. It will likely take a year to 18 months to fully implement all of the proposed changes. Users, such as myself, who use lots of add-on extensions that access low-level customization features in the browser, will be most affected. Please read on the proposed changes.


I've been a Firefox user pretty much from the browser's inception. Yes, it has had its share of ups and downs over its lifetime, but for me, a Linux user, it has been mostly up. I love the fact that with add-on extensions this browser is feature rich like no other. Even Google Chrome, which has a ton of great extensions, can't touch Firefox. Why? The browser has always allowed extension users, through the use of XUL and XPCOM add-on APIs, to access low-level customization features in the browser. For a number of reasons, some grounded in logic, the developers at Mozilla plan to deprecate the old APIs for the new WebExtensions API. In short, this will RADICALLY alter what, and the extent, the user may customize on Firefox. Expect quite a few extensions to be affected by these changes. With many the add-on developers will have to rewrite to the new API (application programming interface). However, in quite a number of other extensions they will be shut out from accessing the low-levels with the browser, thus killing or severely crippling that add-on. Yes, let's be perfectly clear that MAJOR CHANGES concerning extensions are on the way. Prep yourself now for what's coming. It's sad to say but most Firefox users will not find out about these changes until they have landed. What a storm that will create!

Reply to this review

Was this review helpful? (0)   (0)  

3 stars

"No improvements, increased timeouts"

August 31, 2015  |  By lmonteros

 |  Version: Mozilla Firefox 40.0.3


Same old Firefox, nothing new to learn.


Timeouts and non-connections increased


Why issue a new release when nothing has really changed? Or better, why does Firefox issue so many releases to fix bugs or security? In this recent release, I am getting timeouts on a site I visit every day which has cookies already loaded, and non-connection on the secure, trusted site NASA.gov. I'm afraid this kind of thing is SOP with Mozilla releases.

Reply to this review

Was this review helpful? (0)   (0)  

1 stars

"I was forced to return to 31 soon."

August 30, 2015  |  By UserAccountVXSUDYED

 |  Version: Mozilla Firefox 40.0.3


I wrote all articles to Summary.


I wrote all articles to Summary.


I updated Firefox ESR from 31 to 38. But, I was forced to return to 31 soon. Because Firefox ESR 38 had many malfunctions. Additionally, Firefox ESR 38 had many inconvenient points. Firefox ESR 38 disappointed me. I hope that Firefox developers never upgrade Firefox. I will write detail problems and troubles in below.

When I updated it, all icons of bookmarks were vanished.

When I updated it, all information of [already-read addresses (displayed purple)] were reset. So, all link addresses became blue.

[Menu bar > Tool > Apps] were added. It is very obstructive.

And, Firefox ESR 38 has many other malfunctions and troubles.

Therefore, I rewound to Firefox ESR 31. I recommend for you to remain Firefox ESR 31 strongly.

Reply to this review

Was this review helpful? (0)   (0)  

Results 1–3 of 3

Add Your Review

Login or create an account to post a review.

You are logged in as . Please submit your review for Mozilla Firefox
Add Your Review

The posting of advertisements, profanity, or personal attacks is prohibited.
Click here to review our site terms of use.

Update Your Review

Since you've already submitted a review for this product, this submission will be added as an update to your original review.

The posting of advertisements, profanity, or personal attacks is prohibited.
Click here to review our site terms of use.

see all reviews +

Full Specifications

What's new in version 40.0.3
  • Disableed the asynchronous plugin initialization.
  • Fixed a segmentation fault in the GStreamer support (GNU/Linux).
  • Fixed a startup crash when using DisplayLink (Windows Only).
  • Fixed a regression with some Japanese fonts used in the <input> field.
  • Fixed: On some sites, the selection in a select combox box using the mouse could be broken.
  • Fixed: Some search partner codes were missing.
  • Various security fixes.
Publisher Mozilla
Publisher web site http://www.mozilla.org/
Release Date August 27, 2015
Date Added August 28, 2015
Version 40.0.3
Category Browsers
Subcategory Web Browsers
Operating Systems
Operating Systems Windows 2000/XP/2003/Vista/7/8/8.1
Additional Requirements None
Download Information
File Size 40.07MB
File Name Firefox Setup 40.0.3.exe
Total Downloads 48,201,999
Downloads Last Week 43,869
License Model Free
Limitations Not available
Price Free

Previous Versions:

Add to my list Report a problem
read more +

More Products to Consider


Submit a problem report for Mozilla Firefox

Please describe the problem you have with this software. This information will be sent to our editors for review.


The Download.com Installer isn't working as expected

The download link does not work

The software has a newer version

The product contains malicious software



Please select a feedback type.

Please enter a description.

Submit Problem Report


Problem Report submitted

Thank you for submitting a problem report! The Download team is committed to providing you with accurate software information.