https://kaimerra.com/kaimerra-graffiti https://kaimerra.com/kaimerra-graffiti I had worked on a tool for hosting collaborative editing of these kinds of things

https://kaimerra.com/kaimerra-graffiti https://kaimerra.com/kaimerra-graffiti I had worked on a tool for hosting collaborative editing of these kinds of things, but we are currently evaluating whether we should pursue it further.