QuickTime is an extensible proprietary multimedia framework developed by Apple Inc., capable of handling various formats of digital video, picture, sound, panoramic images, and interactivity. The classic version of QuickTime is available for Windows XP and later, as well as Mac OS X Leopard and later operating systems. A more recent version, QuickTime X (10.0) is currently available on Mac OS X Snow Leopard and Mac OS X Lion. QuickTime is integrated with Mac OS X, but was once an optional component during installation for earlier versions of Mac OS. QuickTime for Microsoft Windows is downloadable, either as a standalone installation or bundled with iTunes or optionally with Safari. Software development kits (SDKs) for QuickTime are available to the public with an Apple Developer Connection (ADC) subscription. It is available free of charge for both Mac OS X and Windows operating systems.
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