This is somewhat where I'd like to see https://flems.io https://flems.io going. It's based on the open source Flems web playground (https://github.com/porsager/

This is somewhat where I'd like to see https://flems.io https://flems.io going. It's based on the open source Flems web playground (https://github.com/porsager/flems https://github.com/porsager/flems), so doing different kinds of embeds and sharing directly runnable code could be added easily. Currently the entire state lives in the URL, which is pretty interesting for sharing, and it really makes it a true serverless app, but I'm working to support shareable sessions and live streaming of changes as well.