VUE

I want to put a plug in for VUE. VUE is not a statistical package, but it can be useful to one’s modelling efforts interested in mapping the relationship between variables, for presentation needs, extensive anotation capabilities, sharing or just brainstorming. How about mapping relationships on competing theories and other complex structures?
The Visual Understanding Environment (VUE) is an Open Source project based at Tufts University. The VUE project is focused on creating flexible tools for managing and integrating digital resources in support of teaching, learning and research. VUE provides a flexible visual environment for structuring, presenting, and sharing digital information