When I last used it -- it was pretty cool. It was a "web app" that you saved as a .html file to your computer and just opened in the browser (no back-end, no w

When I last used it -- it was pretty cool. It was a "web app" that you saved as a .html file to your computer and just opened in the browser (no back-end, no web-server, all-local). I'm not sure how much browsers have locked that down now.