The multi-layer visualization tool (MuLaViTo) is based on the JUNG graph framework and was created at the Chair of Communication Networks at the University of Würzburg within the project 100GET-E3.
MuLaViTo provides features to support the development of and acts as a framework for multi-layer / multi-network related project. It emerged during the development of MuLaNEO.
MuLaViTo's original project page can be found here.
In case of questions, please just open a ticket.