Note: If you have Mac OS X (Lion) or (Snow Leopard), you will need to download OS X El Capitan before you can upgrade to the latest Mac OS. Mac OS X (Firefox ), OS X and OS X (Firefox ), Mac OS X (Firefox 3.X), Mac OS X or above (Current Version). Mac users interested in Firefox for os x generally download: Firefox Free Firefox is one of the most popular web browsers on the market, providing numerous helpful features and quick speed to millions of users worldwide.4/5().
