This article explains how to download and install Firefox on a Mac.
Download Mozilla Firefox for Mac free. Mozilla Firefox browser is a fast, full-featured Web browser. Firefox includes pop-up blocking, tab-browsing, integrated Google search, simplified privacy controls, and much more. Firefox For Mac 10.5.8 Chrome takes top honors for HTML5 support, followed by Opera 25 and then Firefox. Roccat is a bit ahead of Safari and Stainless, but the big question is how well does each browser support the parts of HTML5 that are important to you, such a video codecs.
Download Mozilla Firefox free. Mozilla Firefox is a fast, full-featured Web browser. Mac users interested in Mozilla firefox mac 10.5 8 generally download: Firefox 80.0 Free. Firefox 4 is the latest version of one of the most popular web browsers. The developers say that Firefox 4 is up to 4 times faster than 3.6 overall. FirefoxESR 31.5 Free.
Tip: You can add Firefox to your dock for easy access. Just open your Applications folder and drag Firefox to the dock.
Firefox is now ready for use. Just click on its icon in the dock or Applications folder to start it.
When you first start up Firefox, you will be warned that you downloaded Firefox from the Internet. Because you download Firefox from the official site, click .
Upon installation, Firefox will not be your default browser, which you'll be notified about. That means that when you open a link in your mail application, an Internet shortcut, or HTML document, it will not open in Firefox. If you want Firefox to do those things, click . If you're just trying out Firefox or simply do not wish to set Firefox as your default browser, click .

Starting with Firefox version 49, Firefox requires Mac OS X 10.9 (Mavericks) or higher. Visit this Apple Support page to find your Mac OS version.
If you're using an outdated version of Firefox on Mac OS X 10.8 (Mountain Lion) or earlier, the only way you can update Firefox to a secure version is to upgrade your Mac OS to a version that Apple supports. Visit this Apple Support page to learn more about upgrading your Mac.
While insecure versions of Firefox will continue to work on OS X 10.8 and earlier, using an up-to-date version of Firefox on a supported version of Mac OS will provide you with the best and safest user experience.