Rhasspy author here in case you have any questions :)

If you're looking for something for the command-line, check out https://voice2json.org

I think I'll dig in first. Cheers.

It can use https://github.com/cmusphinx/pocketsphinx (offline) or Kaldi(offline), or Google(online) for the "speech-to-text"-part.

The description from a superficial read looks good. Thanks!