I am primarily a backend developer, so this is a small foray into the javascript/front end world. This is a small side project I put together to learn Vue / D3.js. The concept is to let users create animated message passing diagrams. I suspect there may be other tools that do this, but I wasn't able to find anything that worked in a similar way.<p>The front page illustrates some examples I made, though if someone can come up with some better ones, I'd be happy to add them with attribution! There is a simple back end that allows diagrams to be saved. You can edit it with one link, and share it in read only mode with another.<p>The tool itself is very much a POC, but most of the basic functionality is there. There are some issues with layout, and load times/performance. In addition, the site does not work well on mobile, though it would be quite difficult to do so I expect. Any feedback would be appreciated however!