Apple released first version of the Macintosh operating System in 1984. Later different versions of Macintosh Operating Systems were released namely Cheetah, Puma, Jaguar, Tiger, Leopard, and Snow Leopard. Mac OS 10.5 is known as Leopard, which was released in 2007, and Mac OS 10.6 is known as Snow Leopard, which was released in 2009. [...]