Snow Leopard was the last operating system released by Apple to support the company’s Rosetta technology, which ran seamlessly in the background and allowed users to run applications written for the older PowerPC architecture, which was used by Macs until the transition to Intel processors in 2005. Users may also voluntarily choose to stay on an older version of OS X for compatibility reasons.
As a result, OS X 10.6 Snow Leopard, released in August 2009, remains in use by about 29 percent of all Macs, while OS X 10.5 Leopard has fallen to under 10 percent. Because OS X has relatively high system requirements compared to competitors such as Microsoft Windows, many Mac owners with older computers are stuck running previous versions of the operating system. The usage numbers, revealed Friday by Web analytics firm Net Applications and reported by Computerworld, show that Mountain Lion accounts for 32 percent of all online Macs, just 6 months after its release in July 2012.Ĭomputerworld chart based on Net Applications data.Ĭonversely, share of OS X 10.7 Lion, released in 2011, fell 2 percent to 28 percent of overall usage share. OS X 10.8 Mountain Lion, the ninth major release of Apple’s 12-year-old OS X platform, is now the most used operating system on Mac computers.
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