Apple Insider reports that Apple's line of Mac computers are seen making further market share gains in the coming years, growing to 4.5 percent of sales in 2011, and 5.2 percent of new PCs sold in 2015.

"The adoption of Mac PCs and Mac OS is a result of Apple's ability to grow well above the market average int he last 12 to 24 months, thanks to its easy of use from the user interface point of view and ease of integration with otherApple devices, such as the iPhone, iPad, iPod touch and the existing Apple ecosystem of applications and programs," said Anette Jump, research director at Gartner.

The research firm noted that Mac OS share still varies greatly by region. For example, Apple devices have a much stronger presence in North America and Western Europe.

  Apple's Mac lineup seen taking 4.5% of PC sales in 2011, 5.2% in 2015