I use D for a hardware in the loop (HIL) test environment. This is for software tests in the automotive area. D can be used here, because as a system programming language it is possible to be used in real-time programs (IRQ handlers in a linux real-time extension RTAI-LXRT).
With the ongoing port of SWT/JFace I plan to do more and work in D which I would have been done in Java before.
