&quot;What makes Waterfox so fast? It&#x27;s built with Intel&#x27;s C++ compiler. One of the most powerful compilers out there. This enables us to make the fastest possible web browser for all the code changes we make. This potent combination makes for an unparalleled browsing experience.&quot;<p>So basically a build of firefox with a different compiler with binaries available for only mac and windows.<p>For extra fun its based on an older version of firefox and there is no reason to believe it has devs backporting fixes from higher versions nor that there is anybody with the chops to build anything useful on top of it meaning it<p>- Is virtually guaranteed to have security vulnerabilities and bugs that have already been fixed elsewhere<p>- It will either end up with the same flaws you don&#x27;t like about firefox or alternatively it will be forever stuck at an old version while the bad guys find more and more exploits.