I tried contacting the author to see if he would open source it but he's gone dark and doesn't seem to really exist on the Internet anymore. So I grabbed the source code and modernised it, added additional feature and it's what I've been using ever since. I haven't open sourced it out of respect for the original author however the software does not actually have any license that prevents it so I have been considering what the best approach might be (any ideas?).

*Edit: Whoops! I was confusing refinedHN with modernHN (https://www.modernhn.com)