Safari browser is the browser that comes from Mac OS. but now can be used in the operating system safe to use and windows.Safari fast enough, because we know that firefox is the main windows operating system.
but safari better than firefox in Mac OS versions, because safari can work well in windows operating system, then he has added value.
But the shortcomings are in the safari browser if we do open new tab will feel very heavy compared to firefox that not many java / display against.
Another deficiency is that the tool in the safari options are incorporated in different IExplore with Firefox. good but not the best in windows operating system:)