Bradford Morgan White has published an excellent retrospective of QNX, the realtime microkernel operating system focused on embedded use cases. The final paragraph made me sad, though. QNX is a fascinating operating system. It was extremely well designed from the start, and while it has been rewritten, the core ideas that allowed it survive for 45 years persist to this day. While I am sad that Photon was deprecated, the reasoning is sound. Most vendors using QNX either do not require a GUI, o...