Mac only I'm afraid, but I already did [1]. Packaged it too as I figured it might be useful to others [2] (and I'd want to install it on machine's that I might not have Xcode on)
[1]: https://github.com/robgough/dictator [2]: https://dictator.robgough.net
I spent the best part of a couple weeks making improvements and tidying up the UI, but to actually get something working was essentially only a couple of prompts.