I’d like to build a web application that is capable of displaying & editing topology diagram (e.g. a network diagram with applications too). Effectively to have a graphically web based means of allowing a user to add nodes & relationships to represent a topology such as the following http://performancepointinsider.com/files/planning/planningtopology.png. So the model basically consists of nodes and relationships.
Any ideas/advice on how best to do this, e.g.:
Q1. Any open-source project that does something similar?
Q2. Best way of handling the graphical aspect of the application? (e.g. prototype, extjs, etc?)