Yeah I didnt open-source it; it's in ADO because I'm old and set in my ways. But other than that I do not have a good reason for it to not be on GH. I'll put it there when I get a few spare minutes.

I had not considered a browser extension. It's an interesting idea but it doesn't really fit my use case (someone else sends me a har). Plus I think it would be harder for a third party to verify that Snifflab isn't sending anything anywhere.