A multiuser, multitasking, real-time operating system from BlackBerry smartphone maker Research In Motion (RIM). Originally developed by QNX Software Systems, Ltd., Ottawa, Ontario, and sold to home entertainment company Harman International in 2004, the QNX division was acquired by RIM in 2010. QNX is used in RIM's PlayBook tablet and is expected in future BlackBerry smartphones.

For Embedded Systems

QNX runs on a variety of popular platforms in the embedded systems market, including x86, PowerPC, MIPS and ARM. During Harman's ownership of QNX, the OS was widely used in automobile entertainment and navigation control systems. Noted for its low-memory requirement and rapid response, QNX was first introduced in 1982 for the x86 market. QNX-4 became the first POSIX-compliant version.

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