Microsoft VS Apple, the old wars are back again. But, now the battle is for best multi-platform OS. Both the big OS giants are narrowing the gap between their desktop and mobile OSes with the launch of Windows 8 and Mountain Lion. But, which of these two can be called the first true multi-platform OS? Let's find out.

Starting with Mountain Lion, bloggers say that the new Mac OS X has been inspired from iPad. Apple has ported much of the iOS features to OS X Mountain Lion, such as iMessages, iCloud, reminders, notifications and deep Twitter integration. A conversation can be started on Mac and carried further on an iOS device if the devices use the same Apple ID. The new OS X is a lot like iOS.

But Microsoft, on the other hand is also on the same road with its Windows 8 OS. Windows 8 Metro UI has been specially designed for touch-optimized devices. Developers have been successful in running Windows phone apps on Windows 8. Microsoft has also added Marketplace to Windows 8. It is just like Apple's Mac App Store.

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Both Microsoft and Apple are bringing its mobile features to desktop OS. But Microsoft is the only one that is bringing desktop features to mobile OS. OS X is still an operating system for desktops only. While Windows 8 tablet has become one of the hottest tech topics on the Internet and people are debating whether Windows 8 tablets will end iPad's reign. Windows 8 will run on desktop, laptop and even on a tablet. What's more is that Windows 8 is not just stopping at tablets. According to the latest rumors surfacing online, Nokia Lumia 900 may get Windows 8 update. It means Windows 8 may come to smartphones too. Microsoft is also reportedly working on a Windows 8 tablet version of MS-Office.

What about Apple? Apple's policy is a little different than Microsoft. Mac style Docks on iPad can be a great thing, but there is little possibility that Mac features will be ported to Apple's mobile devices. Apple is sticking to iOS for its phones/tablets and Mac OS X for its desktops.

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A uniform OS on tablets, laptops and desktops can surprisingly bump-up app development and open a whole new world of possibilities. Mac OS X is a strong competitor, but Microsoft is a few miles ahead of Apple as Windows 8 and Metro UI show true multi-platform OS capabilities.

Not surprisingly, tablet manufacturers like Asus, HP and Lenovo are already lining up for releasing Windows 8 tablets. Reports are also high that the first Windows 8 tablet manufacturer could be Nokia.

(reported by Johnny Wills, edited by Surojit Chatterjee)

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