Custom builds of the Firefox web browser are created by third-parties. They usually optimize Firefox (compiler and code), and sometimes add new features to the web browser, or even remove features from it.
Not many Firefox users know of the existence of custom builds; probably even less know that there is a third party builds forum at the Mozillazine website that only dealing with custom build announcements.
There are however two areas of concern about custom builds of the Firefox web browser: The first is a security concern as third party builds might contain hidden malicious code that would run in the web browser itself.
The second is program updates which usually are created later than the official Mozilla builds meaning that security patches and other improvements come to these third-party Firefox builds at a later point in time.
The following list contains only custom builds of the Firefox web browser that match the current official version of Firefox. Many custom builds have been discontinued along the road and are only offered as lower (and thus insecure) versions.
If you know of a custom build that has not been included in the list let us know in the comments so that we can add it to it.Advertisement
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