Every time I see a question like this on HN, the answer can be found out with minimal effort. If you want to recommend some relevant alternative you use, just be honest and say that. If you really want to know, it would be reasonable to spend twenty seconds on the page, there’s a comparison table.

I suppose it doesn't have a name I'd be embarrassed to tell my grandmother about.

You can determine this yourself quite quickly by visiting each site and comparing them.