Difograph editing software consists of, at a minimum, two parts:
1. difograph structure manipulation software.
2. a multi-media processor for the Details panel.
It also allows for collaborative creation (Hub view is the edit view here) in the manner of a wiki and, quite importantly, for difographs to be created independently and then linked together to form meta-difographs.
Difograph software also includes one or more presentation views which in turn allow for viewer comments and social interactions.
The software underlying debategraph.org is difograph software. It currently powers Debategraph and the creation of personal difographs. I use it to create difographs hosted here at debategraph.org exploring other uses of difographs.