Thank you! Your post about D without its runtime is a fantastic read.
What for exactly you use it?
Products in https://www.auburnsounds.com/
also PDF generation, SIMD, static websites (CommonMark), and a lot of internal tools. There is a wide gamut of applicability. (EDIT: I have become that blurb programmer :o )
Audio plugins like VST.
He created dplug, a framework for audio plugins in D a pretty great feat!