For embedded systems enthusiasts, students of operating system design, or engineers maintaining legacy industrial equipment, the search term surfaces frequently.
In the niche world of real-time operating systems (RTOS), few names command as much respect as QNX . Known for its microkernel architecture, reliability, and compliance with POSIX standards, QNX powers everything from nuclear power plants and medical devices to the infotainment systems in millions of cars (including BMW, Audi, and VW). qnx 6.5 iso download