Based on general-purpose graph/network data editing software.
First functional prototype is already released on 02/29/2016 and is available for preview at Panviz.com.
Project description and documentation
It is planned to be updated to second version based on customer feedback.
We highly appreciate your feedback. Please, file an issue or drop a letter to Adrian /at/ dmitra.com
Panviz is open-source proprietary product available now for free.