Playgrounds like this which don't need server resources. Adding offline support (PWA) to an application which was primarily designed for use on a server. Thoug

Playgrounds like this which don't need server resources. Adding offline support (PWA) to an application which was primarily designed for use on a server. Though I'm not sure how well that'll work in practice, since the rest of the application will be designed to run on a server as well.