.MP21 File Open With

There is 1 File Type for .MP21 - MPEG-21 Multimedia File

.MP21 File Type - MPEG-21 Multimedia File

In Mac .MP21 File Open With

  • Apple QuickTime Player

Operating System (OS)

An operating system is the software that directly manages a system’s hardware and resources, like CPU, memory, and storage.


macOS is Apple's operating system for Macintosh computers. It offers a user-friendly interface, integration with Apple's ecosystem, and features like iCloud and Siri. It provides a stable and secure platform, empowering users with a range of built-in apps and a seamless experience across devices.

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