Firefox has replaced the Mozilla Suite as the flagship product of the Mozilla project, under the direction of the Mozilla Foundation. Firefox started as a fork of the Navigator browser component of the Mozilla Application Suite. Mozilla Firefox is a graphical web browser developed by the Mozilla Corporation and a large community of external contributors.
Mozilla Firefox is a free and open source web browser by the Mozilla Foundation. Download Mozilla Firefox 31.0 for Mac OS. Once the download has completed, the file (Firefox.dmg) may open by itself and pop open a Finder window containing the Firefox application. Note: If you want to have a choice of the language for your Firefox installation, click the Download options and other languages link instead.