Alberto Simon has used D to create an early version of an SNES emulator. He initially began the project with C#, but decided to port it to D. He says it’s in a very raw state, but he wasn’t just announcing it to release it. Says Alberto,
Wrote this to let you all know you’ve made me a D fanboy, so I’m switching to developing the emu completly in D.
That’s nice to know! For those who want to give it a look, Alberto gave a direct link to a zip archive containing the source and Windows executable.