I've known for some time that it's possible to use the online Alfresco Activiti instance to easily create workflows, then export them as BPMN2.0 files for use elsewhere. We've made use of that a bit for building workflows to use in our on-premise Alfresco install, as the web interface seems to go down well with some of our business users. The only snag is the forms.
Having discovered yesterday that you can also download an App as a zip of json, including the form definitions, I'm now thinking it should be possible to write a tool to do much of the conversion. The form definition json looks like it should have most of what we'd need to generate at least a basic Alfresco Share forms service form config definition xml. Before I spend some time playing around trying to write one, I wondered - is there one already existing?